Pregnant and can’t stand my boyfriend

This is going to sound insane and probably mean, but once I got pregnant I started to not want to be touched or kissed by my boyfriend. I used to love cuddling him and kissing him and loving on him and now I’m absolutely repulsed by it. In my head I’m like, why can’t I just kiss him and hug him I love him so much but then I can’t do it. He’s done nothing wrong either. He’s perfect. Helps with with my son(who isn’t his). Let’s me get some sleep and watches him. He loves on me. Gets me food. Takes care of me. But when it comes to cuddling or hugs and kisses I just can’t. Anyone else have this happen when they became pregnant? I hope it goes away soon.