Ouch?

Sooo I’m currently 30 weeks pregnant. I’ve been with my boyfriend since I was 14 (I’m about to be 20) and I’ve never experienced anything like this before. Within the last month or so, after we’re done having sex my cooter will hurt. Not like a burning sensation and I pee just fine without it hurting or anything but is this just because we’re not having sex as often as we used to or should I be concerned 😂