Struggling with Medication Side Effects and Mental Health

I can’t think anymore. In class, it’s not that it’s too hard for me; I’ve been ok the rest of the year. It’s just that I look at the problem and can’t concentrate, can’t think about it. I used to be so good at math. It hurts to watch myself lose it like this and become dumber and dumber. And finals are coming up….. wellbutrin has made me wake up at 5 am, completely lose my appetite, makes my ears ring and hands shake (I can’t have soup anymore), and now is making me dumb, unable to concentrate. But I’ve been feeling better lately emotionally, so if it can make me feel ok again then it’s all worth it. But then it’s upsetting that I have to just cope with the side effects. It’s my sixth medication I’ve tried. Zoloft gives me severe chest pains, and other SSRIs make my suicidal thoughts worse. Why am I so unlucky????? all my other friends just take zoloft and feel better. Why do I have to suffer for so long?