I am 20 years old, and I have been having irregular periods since the age of 13, when I had my first. Periods come every 2 or 3 months. Last June I stopped taking the pills (in agreement with my doctor, I've been taking them for 2 years for protection) and periods were back at being irregular. I tested my hormones and
LH,
FSH, progesterone were normal but estradiol was low, 40 (71-366 were normal levels) and testestorone was high, 0,607 ( to 0.478 for women). What causes that?