Sex and babies

Natalie • Mom of 4 babies in heaven, soon to be three rainbow babies 🖤❤️🖤❤️
So I love my boyfriend a lot and we have talked about having a kid and he says he wouldn't care if we did but he would be very happy if we did and I just can't do it. Every time we get close to it I get scared and freeze. I can see it makes him upset but he never says why or what he is thinking. So what should I do? I want to be something stops me everytime. Once I had a panic attack which was because he put his hand on my hand and i had a flashback he freaked out a lot. I also don't know how to tease him he says I am really good at it but he doesn't act like it.