Hello dear
Understand your concern.
I think it is due to rough sex.
Friction and pressor
injury during intercourse produce bumps.
It will goes its own in 4-6 days.
If not resolves it may be
STDs
Vaginal cyst: skene's duct cyst, Blocked hair follicle, Blocked
sweat gland, Fordyce cyst,
Molluscum contagium.
Advice:
Take bath with warm salted water
Wear pure cotton loose inner wear
Apply apple cider vinegar
Antibiotic:
tinidazole + metro + flucanazole
Wipe area after urination
If not resolves
Consult the gynecologist and undergo test like
Pelvic examination
PCR, NAAT, and ELISA for STDs
Cell culture of discharge
Hope this may help you
Best regards
Dr. Sagar