i would like to know whether these bumps that you have developed were they related to use of any creams, lotions?
did you take any drug in the last few days?
have you ever had such an eruption before?
is there any oozing from the spots? or any vesicles or pus formation
for now it would be better if you could use some anti fungal cream like clotrimazole
cream on that area of eruption twice a day.if you are on any drug then maybe you may have to stop that drug. or if it is because of any cream or lotion u have recently used u maybe allergic to that.
wait for two days after applying the antifungal cream. if it does not resolve then you may need to see a dermatologist