Just feeling down..

Guys, I've got the best husband ever. He takes good care of me and our daughter, but for some reason it is so hard to get out of bed some days. I was prescribed Zoloft at 5 weeks postpartum and I've recently gotten off of it. They told me not to wean off, just to quit it cold turkey. Well, I'm having super negative thoughts again. I do so much for everyone else, and it just feels like I can't stay in anyone's good graces anymore. I feel like I have to beg for things to be bought for my daughter, when I shouldn't have to. And I know money is tight, but I don't even have a driving vehicle. I'm just so lost about what to do. It feels like I'm sinking, and I may just let it happen this time.