IAmA girl who was born with an imperforate hymen. I didn't find out until after surgery for suspected appendicitis. AMA
When I was 13, I began getting aches in my hips which would last for a couple of days and then stop. This went on for two months, until the 3rd month when it turned into agony on the right side of my stomach. I was taken to hospital and the doctors decided to operate immediately to remove my appendix. When they opened me up they discovered the mess that my body was making of itself and realized the problem. Usually hymens have a hole in them, but mine didn't, so 3 or 4 months worth of menstrual blood had been backing up into my uterus and forcing it's way out of my fallopian tubes. They created a hole in my hymen and I now have a 3 inch scar across my stomach from where they cleaned my insides up and investigated the situation. (They took my appendix as well just in case I did actually get appendicitis and a doctor didn't diagnose it because of the scar).
Ultrasounds and CT scans later found that I'm missing an ovary, which is possibly why I only had pain on my right side. I also have a banana shaped uterus (it's normally heart shaped) and to top things off I'm missing a kidney. Best first period ever? Anyway, ask me anything.
EDIT: I definitely need to go to bed. Might be back tomorrow. :)