It could be herpes, but it could also be a yeast infection or just irritation from having dry, rough sex.
It's been a week-ish with these blisters? You really need to get this checked. They may not be able to get a culture now (there's a very limited window in which do to so), but ask for a type specific PCR swab, which is more sensitive than a regular culture. Go today. If you have to, go to an urgent care.
If you're going to have rough sex, get some lube. If you use condoms, then use a water-based lube, like KY jelly. Oil-based lubes destroy condoms.
Let us know what happens.
Also want to add I wasn't having any pain or burning at all before we had sex. And it doesn't itch at all.