Given the data you provided, it seems likely that you might be experiencing “bleeding in the middle of your cycle”. Although there is no info about the usual length of your whole menstrual cycle (that is: from the day of the onset of one period until the day before beginning of the next menstrual bleeding), but since you said your cycle is regular and given the date of your LMP-last menstrual period, it is presumed that Nov 11th might have been exactly the day of your ovulation.

Certain women have what is called a “stronger ovulation”, accompanied by a greater hormonal disbalance (intensive dropping of blood estrogens while raising of progesterone level is not that fast, just before ovulating), which all in all might result in brownish spotting during these few fertile days in “the middle” of a regular cycle. If this is only light spotting, it is considered pretty normal. But sometimes this might even be accompanied by cramping and pain, called “Mittelschmertz” or middle pain (“ovarian pain”).

Metrorrhagia (uterine bleeding at other irregular intervals, different from the regular menstruation) can be a sign of a number of different disorders and provoked conditions including hormone imbalance and abnormal fluctuation, lower thyroid function, taking Aspirin, recent change of birth control pills, endometriosis, ovarian cyst, PCOS (polycystic ovarian syndrome), benign fibroid tumors in the uterus (myoma, mioma) and, rarely at your age, uteral cancer (extremely slim chances for the last one).


Women who have abnormal menstrual bleeding should always consult their gynecologist to rule out these conditions. Treatment depends on the cause. If there does not appear to be a dangerous cause, such as cancer, hormone supplementation or the therapeutic use of birth control pills (BCP) to better control the menstrual cycle may be recommended. Endometriosis (uteral inner layer in ectopic place, outside the uteral cavity, somewhere inside the abdominal cavity) is very specific and has 2 different kinds of treatment, depending what we want to achieve.

Also, you might explore the possibility that there might be pregnancy, given the fact that in certain women there might be periodic menstrual bleeding in the first few months. Pregnancy is proved or excluded by urine or blood beta-HCG levels (“pregnancy test”) and/or vaginal ultrasound done by gynecologist, if your next period is 5-7 days late from the usually expected day of the onset of your next cycle.

Your gynecologist might want to do basic blood tests (CBC=complete blood count with platelet count), hemostasis and coagulation analyses as well as hormonal tests, to see whether there is a kind of hormonal or hemostasis disbalance. Moreover, an ultrasound might be needed, to see the condition inside abdominal cavity, ovaries and the uterus. Depending on the cause, the doctor will prescribe an appropriate treatment for this irregular bleeding. Or this bleeding might show to be just an incidental one, only due to a stress-caused hormonal imbalance.