acne
"I've been on Ortho Tri-cyclen 21 for a month and a week. It does not make me moody or depressed and nor did I gain weight. Those were my two biggest concerns before going on birth control. I am taking it for acne and so far it just tamed my big pimples but I still get small little bumps here and there. I spoke to my doctor and I was told I need to wait at least two months to see results in acne. It helped me incredibly in terms of period cramps, I used to faint often on the first day of my period throwing up and diarrhea. But now none of that thanks to Tri-cyclen :) strongly recommend! 
beware makes boobs a little sore, not too much."