I took Zoloft for years with very few minor side effects. The worst being dry mouth. I didn't gain any weight while I was on it, in fact, I lost weight. After about three years it just quit working but that is a normal for me. I think I've taken all the antidepressants on the market, some worked for me some didn't. It does take time for the meds to start helping. I would give it a little more time to work but if you don't improve soon talk to your doctor about switching meds.

Good Luck