Burning after sex?? 🤨

The last two times I’ve had sex with my husband, I get a serious burning afterwards. Like it takes at least half an hour to calm down and feel normal again, and it’s been a little uncomfortable during. I’m 23 weeks pregnant, no issues with cheating from either of us and my husband has no discomfort or pain at all so I’m thinking this is just a problem within myself. I tried google, no help. I don’t see my doctor for another few days but I’m wondering if anyone’s had something similar and what it turned out to be?