Nervous to have sex after MC...

I had a miscarriage in May. My husband and I had sex one night and I started spotting, and the next day miscarried. Now I don’t think that’s what caused it obviously, but now that I’m pregnant again I’m so scared to have sex! I’ll be 5 weeks on Saturday. I want to and I feel so bad denying my husband but I don’t want the same thing to happen. What are your views on sex after miscarrying in early pregnancy? I think I’ll feel better after my OB appointment next Friday.