Patient's question:
I got my period around the 17th of last month, and it's already the 25th, but I haven't had it yet. However, my lower back keeps hurting sometimes. I've taken four early pregnancy tests myself, and they've all been negative. What could be going on?Doctor's answer:
A small amount of menstrual flow is generally caused by low estrogen levels. Estrogen can stimulate the proliferation and thickening of the endometrium, preparing it for pregnancy. If pregnancy does not occur, the thickened endometrium will shed and bleed, forming a menstrual period. Low estrogen levels in the body can lead to insufficient endometrial thickening, resulting in less bleeding during menstruation. For your condition, it is recommended to undergo an endocrine examination to check whether the hormone levels in your body are normal.