Do Antidepressants Actually Help? Need Advice

Yes

Short answer, yes they work and yes they have side effects. I normally get nauseous for the first two weeks at starting a new one, but that's why they start you on a low dose. I'm what's called treatment resistant, which means my symptoms persist through multiple medications, but even I notice a considerable difference when on vs off them, even if they don't make me "normal." I've been where you are both in emotional and school terms, and I would suggest you give it a try. They dont have to be longterm if you don't like it. And it may take a bit to fully work, but I think you'll feel better.