Help?

I am so thankful for my rainbow baby. But ever since birth I've been crying daily. I worry about her constantly. My husband went to church this morning, without me. I cried. I told him I didn't get to go anywhere and he said well mom will watch the baby and we can go to church tonight. I told him that's not what I want to do. So he just left me at home alone. My baby will be 2 weeks old tomorrow. She was able to breastfeed the first day, then started to struggle and now refuses to latch. I pump exclusively now and everytime I have to pump I dread it. I'm sad that she won't latch. I want to give her the best but I think pumping is driving me crazy. I am scared that this is postpartum depression. I was on lexapro before I got pregnant for anxiety and weaned myself off during the first trimester. I feel like all I do is pump. I know it could be exhaustion too. But I just feel so down.