I just asked my doctor this question and she said its because your baby is putting pressure with his head on your vagina
And if that works for you summers eve also makes wipes you can carry in your purse
I'm not sure why, but I've been feeling raw. If I can when I start feeling raw I wash with summers eve (body wash made for the vaginal area) and I feel instant relief. Its not like I get really dirty or smell. But it may have to do with PH levels being unbalanced, the summers eve wash is made to help balance PH levels. So maybe give that a try and see if it helps? It could also just be from increased blood flow too.