I have been taking yaz for a year now and at first I was loving it. My period was lighter and that was a major change from what I was use to. About 6 months into it I started becoming psychotic, cramps got worst, and within a year I gained 15 lbs!! My boyfriend has saw my behavior worsen and has noticed I am more depressed. Unlike before. Should I get off? If so should I swap to another birth control! Thanks for the help. I thought I was alone but by reading other bullentins I am glad to see I am not the only one. It also has caused shape pains under my breast. The weight gain has put stress on my back and it's constantly hurting because of the rods I have from scoliosis surgery.