Advice please.. don’t know how to talk to my boyfriend

I just found out I’m pregnant and I’m scared. I’m 23 and he’s 31, he’s been living his bachelor life for years and is a personal trainer. I‘ve always been skeptical about him a little because he is very friendly and because he has a lot of young female clients. But we’ve been dating for 10 months on and off regardless and now I’m pregnant with his kid so I’m trying to make it work. And because I do love him.

However, I’m emotional right now and I feel very lonely. I’m 6 weeks and I’m scared of miscarriage, I’m scared of him leaving me, and I’m scared of having a baby. I just need some reassurance and someone to tel me it’s all going to be okay.

And even though I’m lacking emotional support, he’s really been great lately, he is looking for a new car and is really excited about the baby. So tonight I tried to tell him my feelings and what I need as far as emotionally because I feel love and support through words. He got offended and told me he doesn’t want to talk about the bad stuff and what if’s and if I need to talk about that then to talk to my mom.. it wasn’t a big fight but it was enough that we haven’t talked for the rest of the night and I went home. He still hasn’t texted me.

I just don’t know what to do. I’m so scared guys. I don’t want to do this alone but it’s hard pretending like I’m fine and not concerned at all. Someone please help me.

Also, he says he wants to marry me someday but we’re not engaged or planning a wedding at the moment. We’re just dating

Also, should I go back to his house or should I wait for him to reach out?