1. A lighter flow indicates a problem with the thyroid or pituitary gland

Lighter flow is no cause for concern if you’re on birth control pills, but if it occurs when you’re not on the pill or similar non-hormonal IUD, then it can indicate hormonal imbalance. Dr. Adelaide Nardone from Brown University suggests that lighter menstrual flow may be a sign of problems with the thyroid or pituitary gland. There is a chance that you’re suffering from a Mullerian anomaly, a disorder that causes a malformed hymen, which can interfere with the normal menstrual flow. Lighter flow can also be an indication of autoimmune disorders or polycystic ovarian syndrome.

  1. Unexpected bleeding in the middle of a period can be caused by cervical or uterine polyps

Sudden bleeding in a period means you’re having a breakthrough bleeding, which is a normal side effect when you’re on the pill. However, if you’re not, visit your gynecologist immediately. This bleeding can be caused by polyps in the cervix or uterus, which often result from increased estrogen production. Other causes may be fibroids or infections. Vaginal bleeding can be a sign of cancer.

  1. Cramps that don’t seem to go away

Consult a doctor if you feel cramps that go on for days during your period. Dr. Daniela Carusi, director of general gynecology at Brigham and Women’s Hospital in Boston, says that young women think they must tolerate cramps, but it is not true. Cramps during periods are a problem you need to report to your gynecologist.

  1. If your period is late, but you’re not pregnant, you may be suffering from hormonal imbalance

If this is the case, here’s what you should know: you may have PCOS, making it harder to learn your fertile days. If you’re suffering from obesity or have a low fat percentage, you may have a hormonal imbalance. This requires a change in your lifestyle. Overweight women on their periods need to make a diabetes test, as ovaries are affected by insulin resistance. Consult a doctor as soon as you can in this case.

  1. Check the color of your period

Your period is normal if the color is similar to cranberry juice. However, if the color is different, you may suffer from estrogen imbalance.