Sounds like folliculitis. It is common in pubic area... especially with those who shave.
Need not to worry...This can easily be treated with careful medication...but please do not try to self medicate as that can cause proboems
Next Steps
Kindly book an online consultation so that I can assess via pictures and proper history
Health Tips
Do not apply any random medication without consultation.
Do not scratch or pick skin or try to pop the bump as that can worsen the condition.