birth control
"I started taking Sprintec yesterday.  Within a half an hour, my eyes were blurry and sensitive to light.  My head was hurting extremely badly, and is still hurting today.  I woke up at three in the morning due to stomach cramps, which I have never had happen before on my period.  This, of course, is how my body reacted to it, I am not saying other people will have the same symptoms."