What does this seem like

Dani

I'm 37+1 & a FTM baby's head down and has been for the last 9weeks. Most of the night I've had what I can describe as sharp period like pains in my V , it seems like it's tightening , I think it's my cervix I can't be 100% as I can't pinpoint exactly where the pain is. My downstairs is swollen on one side for some weird reason and I can't figure out why! has anyone had anything similar? is it Braxton hicks as they come and go