Fiancé seems sexually withdrawn

We are on our baby moon and I expected It to be sexual and intimate. He’s been intimate and sweet I get belly rubs foot rubs and tummy

Kisses he talks to our baby a lot . Sexually not much though on what was supposed to be our vacation for the last time before baby out of 3 days we have sex once . This is playing on my self esteem that I plan on bringing it up tomorrow wondering if I’m less attractive in general or If it’s the fact I’m almost 33 weeks either way this is more hurtful then I expected .