I want to give up

I'm 4 weeks post partum so I am still on my maternity leave, my husband took 2 weeks off but I felt bad since he was exhausted that I let him sleep through the night while he was off. I still had post partum insomnia so I couldn't sleep anyways. Well now that I am comfortable sleeping while baby sleeps, I'd like him to help a little more. I am super exhausted and I do every thing. I do everything for the baby, the dog, and I clean the house and I have even done my husband's laundry which by the way he let it pile up so it was 3 loads. He hasn't bathed the dog or the baby since either of them were born. I feel like a single parent. I have no support from my husband whatsoever. I feel so alone. When I say I want to give up I don't mean give up on being a good mom. I mean give up on being a good wife. I want more kids later on, but without the correct support from my husband it won't be happening. My husband has always been this way, but he seemed so excited to have a child that I thought he would change. So maybe it's my fault for getting my hopes up but I can't deal with him anymore. He got annoyed because the baby was crying due to gas so I got angry because he told our son to shut up. I fussed at him and told him to go to sleep in our room and we will sleep in the living room. He claimed he was really exhausted. Well he is on Instagram liking pictures, but he can't stay up or get up through the night to help me so I can get more than 3 hours of sleep at night? I don't know what else to do here I've tried talking to him. Next step is an ultimatum.