Feeling down on myself

I’m in a relatively new relationship! I’m 15 weeks along in my pregnancy! Noticed lately that I can’t seem to “satisfy” my man sexually (like he can’t orgasm) & our sex life is not near as much as it was before. He confided in me finally and said it’s because I’m “showing” more. Did anyone else have or had this issue with their partners? It also doesn’t help he is a constant looker of instahotties and I’m obviously not a model at the moment! Any advice?

I tried suggesting lingerie but he said maybe after pregnancy when I’m smaller 😔