Hello,
Without examination, confirmation of a diagnosis is tough but it can be contact dermatitis, rash due to friction rub, folliculitis, cysts ,molluscum contagiosum(multiple, small, dome-shaped papules, often with a central depression or plug) or genital warts(caused by HPV infection).
Apply warm compresses, Neosporin ointment and calamine lotion and avoid messing with it.You can take anti-inflammatory pain killers like ibuprofen or acetaminophen. If the lumps persists then it will be best to get it evaluated from a dermatologist.
Hope it helps. Take care and please do keep me posted on how you are doing or if you have any additional queries. Kind regards.
also i forgot to mention i several circular patches of skin around my genitals which have turned dark and look like a permeant bruise. they also do not hurt. several can be seen in one photo.