Need a little advice.

O

I am in a relationship since 3 years now. We are so much in love and everything is smooth and fine except the sex part. I had been doing it since the last 2. 5 years but I am very paranoid about having sex. There was this incident when my periods got delayed for 14 days after having sex and ny boyfriend wasn't really interested in comforting me when I was scared. Since then,I have been very scared about having sex. I don't allow him to touch me down there, and have sex only a few days before my periods when I start cramping. I am paranoid with every little thing, even if he touches his penis and goes on to touch my clit. I see chances of pregnancy happening all the time inside my head. I guess this is having some sort of negative impact on our relationship.

I do have ocd and that make things worse.