birth control
"I had been taking Yaz for about 2 years then had to stop since I was switching jobs and lost my insurance for a few months.  When I first started taking Yaz I noticed MUCH lighter and shorter periods, no noticeable weight gain/loss, no mood swings or craving.  When I started taking the generic pills I felt the exact same and chalked it up to taking Yaz for so long, except when I recently switched back to Yaz my breasts were tender and a few days before my period I had bad migraines.  I really didn't think to relate these to Yaz until I read some of the other posts and heard of the side effects."