Pregnancy and sex

I’m almost 15 weeks pregnant with my rainbow baby. And I am terrified to have sex. A year ago I found out I was pregnant. We were over the moon. We had sex. Then the next day I had a miscarriage. ( I’m not saying sex is why I miscarried) We we’re pregnant four months later and I told my fiancé I wanted to wait until after the 1st trimester to have sex again and he was fine with it, but I miscarried before I even got to 8 weeks. In between the two miscarriages and even after the second one. I had yeast infections, UTIs and BV. I had gotten BV with my second pregnancy and had to take antibiotics and not long after is when i miscarried. I don’t know if it’s sex in itself, or semen but I’m sensitive to it and always end up with some kind of infection (not STDs) neither of us have any we have both been checked and of course they checked me for everything during my prenatal visits during all three pregnancy’s. Anyways, now that I am almost 15 weeks pregnant I am officially out of the first trimester and my fiancé asked me last night when we will have sex again and I just got quiet. And ignored him. He has been extremely patient with me and now I feel like I am neglecting him. I have zero libido and literally have a fear that if I have sex I will get a UTI and miscarry or something else will happen. I do not know what to do.. any advice? 😩