I have been on quasense for 2 months, starting my 3rd month when ...

I have been on quasense for 2 months, starting my 3rd month when I started to talk to my aunt about different birth controls. She told me her aunt was on Seasonale and my aunt was taking Seasonale (sp?) and they both hated it! My aunt started to tell me about the horrible 3 week periods and my sister has had the 3 week period of weird dark brown not blood but more of a solid clump? I haven't started to take the pills to help me with my period but after reading all of these comments I'm getting nervous to start taking them! I have noticed about a 5-7 pound weight gain (went to the doctors because of a yeast infection, which I have never had before), I get migraines about 7-8 times a year for about a week at a time, but after starting this new birth-control, I cannot get rid of my migraines no matter how much medication I take for it (and that medication makes the birth-control effectiveness go down :(...) and I have become quite irritable/bitchy with my boyfriend lately. I thought this was due to me starting college a couple weeks ago (the freshman 15, being stressed etc...) but now I'm not too sure. If anyone could PLEASE give me some idea as to what they think I should do as in keep taking quasense or switch to a new birth-control.