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Period 15 days apart
seas72 posted:
I'm 37yrs old and had my period the beginning of the month and then unexpectedly got it again yesterday. I've always had a 23-28 day cycle and this has never happened before. I'm not on any type of birth control nor am I sexually active at this time. I do take medication for depression and a thyroid pill to work with the antidepressants. I don't have a thyroid problem and the dosage is minimal. Could this be what caused my period so soon? I've been taking the thyroid pill along with my other medications for months and never had a problem. Should I be concerned?
J_Harrison_Hohner responded:
Dear seas: Given your specific history (including age 37) my best GUESS would be as follows. The most common reason for a menstrual pattern like you have described is not having an ovulation the preceding month. In a normal cycle, estrogen is produced all month. Estrogen is responsible for building up the lining of your uterus so you have something to shed each month. The good news is that you have enough estrogen to make a lining that does shed.. In a normal cycle, progesterone production increases following ovulation and release of an egg.. Progesterone ?stabilizes? the uterine lining in preparation for a possible implantation of a new pregnancy. If you are not pregnant that month the levels of estrogen and progesterone fall, triggering the release of the uterine lining?your period. So, if you do not ovulate, the estrogen build up of the lining continues, but without the usual ovulation associated progesterone. Thus, the hormone levels don?t decline, and the lining stays up inside the uterus?as either a missed period or erratic bleeding. Causes for not ovulating are multifold: low thyroid levels, pituitary problems, ovarian cysts, physical stressors (eg sudden increases in exercise, crash dieting), emotional stressors (problems with parents or boyfriends/girlfriends, exams), increased body weight, anorexia, rotating shifts at work, etc.. Neither your antidepressant nor the minimal dose of thyroid medication seems a likely culprit. Ovulations can become less regular as we move into our late 30's and 40's. Another possibility would be midcycle bleeding due to the estrogen spike and drop which happen right before ovulation. In this instance the bleeding happens about 14 days before the next "normal" period. In your case this would be around cycle day 10-14. Some women have this midcycle bleeding every month---others rarely. If the bleeding persists or continues to be erratic/unpredictable please see your GYN or clinic for a more accurate diagnosis. Yours, Jane

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