What to Know About Your Menstrual Cycle

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By: Rachel Daof, DPT

Here at PHRC we see conditions that affect that dreaded time of the month: our periods. As we have written before, conditions like endometriosis can directly affect menstruation. Other menstrual related issues include period cramps, nausea, bowel movement issues, headaches, and many other symptoms all driven by our cycle. To many of us, these are things we merely deal with on a monthly basis, but we have to start thinking about why our menstrual cycle is important. In fact, our cycle is so important that the American College of Obstetricians and Gynecologists (ACOG) are calling it the fifth vital sign.1 In this blog I’ll help you sort out what your body is doing during the cycle and what to expect in each phase.

So what is the menstrual cycle? The menstrual cycle is the monthly series of changes a woman’s body goes through in preparation for the possibility of pregnancy.2 Your cycle length is when you start bleeding for one cycle to the onset of bleeding of the next.3 You may have heard the average length of a cycle is 28 days; however, most cycle lengths range between 25-30 days. In this article, I’ll break down your menses in four phases: menstrual, follicular, ovulation, and luteal. Here’s what happens in each phase:

Menstrual Phase: (four to six day average)3

Your cycle starts the first day you start your period. This phase starts if you had not gotten pregnant, and you shed your uterine lining. Uterine lining sheds because progesterone levels are low at this time which decreases the blood flow to your superficial endometrial layers. The endometrium releases prostaglandins that contract the uterus to physically shed these layers. What was once at its lowest point, estrogen starts to become produced by growing follicles which stimulate regeneration of the endometrial epithelium at around day two of your cycle.

  •     Average menstrual blood loss: 30mL
  •     Abnormal amount of blood loss: >80mL

 Some conditions that cause heavy menstrual bleeding4:

  •     Hormone imbalance like PCOS
  •     Uterine fibroids
    • Here is a link to 5 KCRW’s Bodies podcast for an anecdotal story about uterine fibroids.
  •     Polyps
  •     Adenomyosis

Menstrual cramps during this phase is a common symptom, and some of you have heard that magnesium can help mitigate these symptoms. This podcast10 by Natural MD radio talks about the science behind how this works.

Follicular Phase: (3,6)

The variability in women’s cycle lengths are usually because this phase’s length across all women can differ and range between 10-16 days. The follicular phase starts at the same time the menstrual phase starts, and it ends when you ovulate. At this time, your ovarian follicles develop coining it the follicular phase. Here, you release follicle stimulating hormone (FSH) which stimulates the ovaries to produce 5-20 small sacs (i.e. follicles) each containing an immature egg. Between days five and seven of your cycle your body selects a single follicle out of the group to mature. By day eight, that follicle exerts its dominance and grows and suppresses the growth of other follicles which resorb. As we are in the heat of the follicular phase, estradiol levels rise leading to a cascade of events that produce a secretion of progesterone. The estrogen thickens the lining of the uterus to prepare for an embryo if you do get pregnant.

Ovulation Phase: 3,6

This is the precious time during your cycle that you may want to pay attention to if you’re trying (or not trying) to get pregnant. During this time your body is beaming with estrogen, triggering a cascade of events to release luteinizing hormone (LH). The predictor of ovulation is the peak of LH surge caused by the massive production of estradiol at this time. Ovulation occurs 34-36 hours after the peak of LH. This is when your ovary releases a mature egg and finds its home in the uterus waiting for sperm to fertilize it. If sperm does not find its way to the egg, the egg dies or dissolves.

During this phase, you may notice that your cervical fluid/discharge is a lot stickier, and it should be like raw egg whites. The consistency and contents of this discharge help protect the sperm making it easier to get pregnant.7

Luteal Phase: 3,6, 8,9

This phase is usually 14 days long, which is relatively consistent for all women. During this time, after the follicle releases the egg, it turns into what’s called the corpus luteum. The corpus luteum secretes progesterone and primes the endometrium to implant a fertilized ovum. However, if you don’t get pregnant, it resorbs, and after resorption, estrogen and progesterone levels rapidly drop. Then you re-enter the menstruation phase. PMS can be present in this time due to hormone changes.

The above shows what happens during a normal cycle. However, here at PHRC we see patients that deviate from the norm (e.g. those with endometriosis, adenomyosis, PCOS, etc). Remember, your cycle is now considered a fifth vital sign. If you suspect your body is not doing the above, please have it checked out by a qualified provider. On another note, with some of these conditions come pelvic pain which lead to subsequent muscle guarding perpetuating pelvic pain. Here at PHRC, we are able to identify and treat musculoskeletal dysfunctions that may accompany the above conditions.

 

References:

  1. Menstruation in Girls and Adolescents: Using the Menstrual Cycle as a Vital Sign. ACOG. https://www.acog.org/Clinical-Guidance-and-Publications/Committee-Opinions/Committee-on-Adolescent-Health-Care/Menstruation-in-Girls-and-Adolescents-Using-the-Menstrual-Cycle-as-a-Vital-Sign. December 2015. June 12, 2019.
  2. Menstrual Cycle: What’s Normal, What’s Not. Mayoclinic. https://www.mayoclinic.org/healthy-lifestyle/womens-health/in-depth/menstrual-cycle/art-20047186. May 11, 2016. June 12, 2019.
  3. Reed B. Carr B, The Normal Menstrual Cycle and Control of Ovulation. Endotext. Aug 5, 2018; June 12, 2019.
  4. Menorrhagia. Mayoclinic. https://www.mayoclinic.org/diseases-conditions/menorrhagia/symptoms-causes/syc-20352829. July 15, 2017. June 12, 2019.
  5. https://www.bodiespodcast.com/resource-pages/2018/8/28/episode-2-bleeding
  6. Stages of Menstrual Cycle. Healthline. https://www.healthline.com/health/womens-health/stages-of-menstrual-cycle#ovulation. August 17, 2018. June 12, 2019.
  7. Guide to Cervical Mucus. Healthline. https://www.healthline.com/health/womens-health/cervical-mucus. December 11. 2017. June 12, 2019.
  8. The Menstrual Cycle. Sex Infor Online UCSB. http://www.soc.ucsb.edu/sexinfo/article/menstrual-cycle. May 29, 2018. June 12, 2019.
  9. Premenstrual Syndrome (PMS). OBGYNs of Canada. https://www.yourperiod.ca/abnormal-pain-and-menstrual-bleeding/premenstrual-syndrome-pms/
  10. Natural MD Radio: Magnesium for Women. Aviva Rom. MD. https://avivaromm.com/magnesium-for-women/

FAQ

What are pelvic floor muscles?

The pelvic floor muscles are a group of muscles that run from the coccyx to the pubic bone. They are part of the core, helping to support our entire body as well as providing support for the bowel, bladder and uterus. These muscles help us maintain bowel and bladder control and are involved in sexual pleasure and orgasm. The technical name of the pelvic floor muscles is the Levator Ani muscle group. The pudendal nerve, the levator ani nerve, and branches from the S2 – S4 nerve roots innervate the pelvic floor muscles. They are under voluntary and autonomic control, which is a unique feature only they possess compared to other muscle groups.

What is pelvic floor physical therapy?

Pelvic floor physical therapy is a specialized area of physical therapy. Currently, physical therapists need advanced post-graduate education to be able to help people with pelvic floor dysfunction because pelvic floor disorders are not yet being taught in standard physical therapy curricula. The Pelvic Health and Rehabilitation Center provides extensive training for our staff because we recognize the limitations of physical therapy education in this unique area.

What happens at pelvic floor therapy?

During an evaluation for pelvic floor dysfunction the physical therapist will take a detailed history. Following the history the physical therapist will leave the room to allow the patient to change and drape themselves. The physical therapist will return to the room and using gloved hands will perform an external and internal manual assessment of the pelvic floor and girdle muscles. The physical therapist will once again leave the room and allow the patient to dress. Following the manual examination there may also be an examination of strength, motor control, and overall biomechanics and neuromuscular control. The physical therapist will then communicate the findings to the patient and together with their patient they establish an assessment, short term and long term goals and a treatment plan. Typically people with pelvic floor dysfunction are seen one time per week for one hour for varying amounts of time based on the severity and chronicity of the disease. A home exercise program will be established and the physical therapist will help coordinate other providers on the treatment team. Typically patients are seen for 3 months to a year.

What is pudendal neuralgia and how is it treated?

Pudendal Neuralgia is a clinical diagnosis that means pain in the sensory distribution of the pudendal nerve. The pudendal nerve is a mixed nerve that exits the S2 – S4 sacral nerve roots, we have a right and left pudendal nerve and each side has three main trunks: the dorsal branch, the perineal branch, and the inferior rectal branch. The branches supply sensation to the clitoris/penis, labia/scrotum, perineum, anus, the distal ⅓ of the urethra and rectum, and the vulva and vestibule. The nerve branches also control the pelvic floor muscles. The pudendal nerve follows a tortuous path through the pelvic floor and girdle, leaving it vulnerable to compression and tension injuries at various points along its path.

Pudendal Neuralgia occurs when the nerve is unable to slide, glide and move normally and as a result, people experience pain in some or all of the above-mentioned areas. Pelvic floor physical therapy plays a crucial role in identifying the mechanical impairments that are affecting the nerve. The physical therapy treatment plan is designed to restore normal neural function. Patients with pudendal neuralgia require pelvic floor physical therapy and may also benefit from medical management that includes pharmaceuticals and procedures such as pudendal nerve blocks or botox injections.

What is interstitial cystitis and how is it treated?

Interstitial Cystitis is a clinical diagnosis characterized by irritative bladder symptoms such as urinary urgency, frequency, and hesitancy in the absence of infection. Research has shown the majority of patients who meet the clinical definition have pelvic floor dysfunction and myalgia. Therefore, the American Urologic Association recommends pelvic floor physical therapy as first-line treatment for Interstitial Cystitis. Patients will benefit from pelvic floor physical therapy and may also benefit from pharmacologic management or medical procedures such as bladder instillations.

Who is the Pelvic Health and Rehabilitation Team?

The Pelvic Health and Rehabilitation Center was founded by Elizabeth Akincilar and Stephanie Prendergast in 2006, they have been treating people with pelvic floor disorders since 2001. They were trained and mentored by a medical doctor and quickly became experts in treating pelvic floor disorders. They began creating courses and sharing their knowledge around the world. They expanded to 11 locations in the United States and developed a residency style training program for their employees with ongoing weekly mentoring. The physical therapists who work at PHRC have undergone more training than the majority of pelvic floor physical therapists and as a result offer efficient and high quality care.

How many years of experience do we have?

Stephanie and Liz have 24 years of experience and help each and every team member become an expert in the field through their training and mentoring program.

Why PHRC versus anyone else?

PHRC is unique because of the specific focus on pelvic floor disorders and the leadership at our company. We are constantly lecturing, teaching, and staying ahead of the curve with our connections to medical experts and emerging experts. As a result, we are able to efficiently and effectively help our patients restore their pelvic health.

Do we treat men for pelvic floor therapy?

The Pelvic Health and Rehabilitation Center is unique in that the Cofounders have always treated people of all genders and therefore have trained the team members and staff the same way. Many pelvic floor physical therapists focus solely on people with vulvas, this is not the case here.

Do I need pelvic floor therapy forever?

The majority of people with pelvic floor dysfunction will undergo pelvic floor physical therapy for a set amount of time based on their goals. Every 6 -8 weeks goals will be re-established based on the physical improvements and remaining physical impairments. Most patients will achieve their goals in 3 – 6 months. If there are complicating medical or untreated comorbidities some patients will be in therapy longer.

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