4 weeks PP and sad

My PP stomach is starting to really make me sad. I think about it and I almost want to cry. I was very fit before I got pregnant, I had a six pack and now it’s just belly. And I love my son so much but I just want my belly to go back down. Or be similar! I also feel like sometimes I don’t pump enough for my son and that just really makes me sad too. I want him to be full after eating and I want to have enough milk stored up for when I go back to work in a couple of weeks. 😔 my husband tells me I’m doing great but I just don’t feel that way. Anyone else???