What could this be?

Okay I have a rash that can up on my vagina the day after I had sex with my boyfriend which he made me really raw down there.... It Burns and itches bad and I have like small blister like spots on inside of my vagina lips and a small not on pottom of the outside of one... I also think I have a yeast infection on top of that tho. I've never had an STD or an STI and im scared of what it could be

When in doubt or when something feels off, go see a doctor. If you fear herpes, ask for the swab test for herpes (not or not only the blood tests) and be sure to get that done asap for highest accuracy.

It seems like you may be having an outbreak from HSV2 and are raw from the sores or ulsers that may be open and causing your yeast infection because they are contagious. You will have to go see your doctor because it sounds like it is your first outbreak. When did you first notice the rash?/bumps? How long has it been from after you had sex to when you noticed the bumps? Have you had sex with this partner once before the night you felt raw? Do you only have 1 sexual partner? Does he have only 1 sexual partner?

Bumps down below do not necessarily mean herpes, and even if it is herpes, it doesn't mean that it's HSV2. Could be HSV1, so take care in how you advise others.