I need to know about my birth control!?

I just need a little advice on what to do. I'm 20 years old. I started taking lo Seasonique a couple of years ago, but stopped taking it because it costs too much. That's when I got the depo provera shot and it DOES NOT agree with me. I've gotten 2 shots as well as horrible acne, terrible mood swings and VERY VERY long periods (the first one was 3 weeks, the second has been a week and still not over (they used to be 3 days with no birth control and about 5 days with lo Seasonique). My question is that if I spend the extra money to get lo Seasonique again, will it affect my body at all since I'll still have the shot in my system for the next year?