I just started my second pack of pill yesterday and I don't know ...

I just started my second pack of pill yesterday and I don't know if I like these pills. I am taking zoloft also for anxiety and my side effects are horrilble. I have had a hard time falling asleep (I literally have to lay in bed with my eyes closed for hours before falling asleep), I have terrible nigh sweats and wake up drenched in sweat, I sleep all day long, I have horrific nightmares which I never had before, and massive headaches. I am not sure if I want to stay on the pill, I know it is only my second month and it takes a couple months to regulate but the side effects are ruining my social life. I feel like a zombie. About the third week in my first pack i started spotting (or what I thought was spotting). It lasted 8 days, and my normal period was only 6 days. I bled just as much as on my normal period and has severe cramps as well. The only reason I got my 'period' was because I was about an hour off on taking my pill the previous day. It is pathetic. Has anyone else had these symptoms? Or have any suggestions on better birth control pills.? Oh and I am 18 years old.