I suffered a severe TBI at 21, a virgin and my body stopped making progesterone naturally so I have to physically take it now. I just had endometriosis surgery on August 28th and this is my first period after and the last 2 mornings I had a huge blood clot and I wondered if that is worth calling my OB/GYN about, thanks, trying to be healthy because even though I am 44, I am no where near menopause because God is in control and I lost my virginity late in life because of the over medication.