It could be irritation from shaving, but I would let your doctor have a look asap just in case. Out of 6 full term pregnancies, I haven ever experienced that.
Yea I'm going to get that checked out they started comming when I was around 3 month.
I have never had blisters. I have had razor irritation while pregnant but it didn't show up like blisters. Best way to know is stop shaving and if it goes away within a day or two its probably irritation. Definitely still get it checked out though. I do know that pregnancy can make you have reactions to things you never did before. Did you try to stop shaving and see if it went away??