First/Early Second Trimester Sex

Anyone else feel uncomfortable during sex? It doesn’t matter what position we’re in or how “gentle” he’s trying to be, I always feel like he’s hitting my uterus and it’s super uncomfortable. I work overnights and this morning when I got home he was in the mood so I gave in... even though I was dead on my feet. Now all shift this evening and through the night my uterus feels sore. Is this normal because of the location of my uterus for being 14 weeks pregnant or is this just me?