my husband is pressuring me

my husband is pressuring me to lose weight. I had a baby 3 months ago. I've already lost 20 pounds and have 25 left. It's stressing me out that he expects me to lose weight so fast. I'm tired. I'm up with my baby girl at night. I just started working again. He wants the house clean and dinner ready. He says it's my fault for gaining so much weight.