I have been on Yaz for 3 months now.. I just want to start off by saying i love it! I use to take tri-cyclen.. that use to be the only pill i could take b/c all other pills made me bleed all the time..so i like tri-cyclin(not sure if i'm spelling it right cuz i took generic tri nessa) but the only problem is i was so psycho and messed up.. i felt like iwas going to go crazy i was a total bitch and my moods were so messed up i almost got on antidepressants.. but my dr. gave me yaz and i have never been better! i feel great i have lost weight my periods are very light..i'm happy everything is wonderful! the only thing i have noticed is diareha and at first i had a funny taste in my mout but i also have constipation as well and i have been reseaching I.B.S (irritable bowel syndrome) which i though i might have had before taking yaz.. so all in all i love the pill but a little concered about the consitpation and Diarreha but i'm looking into it