TMI but I've never ever had this before please help

I tried to take a decent photo but it's a little hard as it's in a weird spot. about a week or so ago this little rash popped up and it's been bugging me here and there. my SO looked at it and his only idea was that it could be HSV but for some reason that doesn't add up to me. I've had my fair share of partners but mostly used protection because i didn't want something like THIS to happen. found out about 2 months ago that i'm pregnant. I've only been with him for the past 8 months and he doesn't have anything, and I just got complete blood and urine testing done for my pregnancy a few weeks ago, and they found nothing abnormal and no STD/STIs. 
At first it was pretty itchy and I started using sterile non-stick pads to keep it dry, as I thought maybe it was a moisture thing. Keeping it dry seemed to help out a lot and the blisters dried up. It was almost gone 2 days ago and then it sort of started itching again and I checked it this morning and there were a few more blisters and it looks like it did when it started. Theblisteds ate a bit of a yellow-ish color and pretty small. When they dry up they look like little scabs. It is not constantly itchy, and for the most part they don't bother me, I don't even notice them. I haven't shaved over that area as I don't want to run a razor over them. They don't really ooze and if they do it dries up pretty quickly and it looks a bit like crust on the inside of my underwear.
I have never ever seen/had this before and have no idea what it could be. i need help as going to the doctor right now is not an option for me as i am out of a car and a ride for the most part during the week. I plan on going as soon as I can but in the mean time I need opinions on what this is. Pleaseeee help I am lost. HSV just makes no sense to me but if that's what it is.....