Vag soreness

So the muscles around the opening of my vag feels swollen and sore 😭 idk what it could be I’m currently 24 weeks pregnant I’ll be 25 weeks tomorrow 😭 I’m scared it could be something serious or is it normal ? It’s not inside it’s on the outside of both sides near the vag opening 😫 it feels like I had ruff sex but I haven’t 😭🥵 if normal what’s some ways to make it better!?