Okay, I'll be the 'different' one. I was 13-years-old, but I had massive GYN problems. I had such a large ovarian cyst on the left ovary that I nearly needed surgery. I had 30-day cycles, but periods that lasted 2 weeks straight. Changing my pad every 2 hours was a MUST. I even had to set my alarm clock during the night. Many, many social events were cancelled monthly because I wouldn't even be able to move since the pain was so great.
I was bounced on the off the pill for the next 3 years to dissolve the cyst. The birth control pill would work, but the cyst would return after only being off it for 3 months! Finally, I was left on the pill at the age of 16! I remained on the pill until I was 23. I still have issues...
Edited to Add: I got so many nasty looks it was pathetic. I guess everyone thought I was pregnant...I hated going because of it!!!