Well, without a clinical evaluation it would be difficult to determine what these could be. Likely possibilities include acne/ zits, allergic reaction, folliculitis
etc. I would suggest keeping the region clean and oil free at all times. You could also use ointments containing benzoyl peroxide/ clindamycin
on the region. If you do not see any improvement with the measures, I would suggest consulting a dermatologist for
an accurate diagnosis and appropriate management.
Hope this helps.