I had that with my 2nd. I put it down to everything just being weaker down there and the pressure from the baby pushing down upon it. I also had varicose veins down there too which didnt help but was all ok and it went away after baby was born
I was hoping there would be an answer on this. I'm 34 wks & really swollen on vagina with dd2. This never happened before. I've got really bad, violent cough as part of a cold at the moment & am worried I've coughed my insides out!!