abnormal uterine bleeding
"I have been on birth control for 9 years for heavy/too frequent periods. For the first 6 years, Seasonique was amazing. However, especially within the past two years, I have had excessive spotting.  For awhile, I was on the generic and just thought there was a difference between that and the name brand. Initially I had no problems, but I started a doctorate program and am sure the stress has a lot to do with it, but my spotting has started again.  It'll happen any time I stress out or after having sex.  I like not having my period for 3 months but now, im on my period more than a normal bc. Except it's worse. It comes unannounced and has ruined a number of undergarments."