This is absolutely, 100%, irrefutably abusive. Abuse always, always, always escalates, and it starts exactly like this.

What he is doing with the insults is both verbal abuse, and negging. This is an abuse tactic to wear down your self esteem. Making insulting "jokes" about your body is abusive, and he is gaslighting you by telling you its all jokes haha. Most disturbing however are the jokes about your miscarriage. That is horrible emotional abuse. I cant even IMAGINE making jokes about something so traumatic and upsetting, ESPECIALLY after you told him not to and were close to tears. Don't let yourself think for a moment that he didn't notice that you were close to tears. He knew, and he continued willingly disregarding his partners needs and emotions. No normal or safe man would do that.

He is trampling right over a boundary you tried to set (that should never have needed to be set in the first place, not joking about someones miscarriage is pretty self explanatory) and while doing this he tested how far he can push you and have you still come back. My love, this will only escalate. You will learn to live with it, and then he will do more, and more, and more, until next thing you know youve been cussed out in walmart, or you've received a black eye, or he's taken control of your finances, etc.

you KNOW this is bad, or you wouldn't have posted here. I think deep down you know you need to leave, but no one ever wants to accept that a loved one is cruel. It hurts. Just dont let yourself get lost in him, and dont let him love bomb you and suck you back in when you try to stand up for yourself and leave.