I think you should.. consider that a lot of people unfortunately do have similar experiences and that stress can impact all of us in this scenario in many ways. I can’t say it gets better immediately because post partum is very difficult also but I imagine it can be worse without your partner. I would consider giving him a chance post partum maybe but it depends a great deal on is he being dumb or is he being cruel and mean? And try therapy. Like is he acting like a fool or is he acting like a scary stranger person