Weird feeling, what is this??? Maybe TMI

For the last day or so I’ve been feeling like little bubbles or like discharge/air is coming out my vag. It makes me get up and go to the bathroom thinking there’s going to be a mess in my underwear, but then they’re dry. I’m also super crampy like my period is coming, and I remember getting this feeling before my period would come when I wasn’t pregnant, and I’d always go and to the bathroom thinking my period started. I’m 34+1. Could this be cervix changes or something? Anyone else ever feel this?