Didn't they take any cultures to try figure it out? and give you anything to try clear them up?
How big are they and are they hard or filled with clear fluid?
i did and they dont know they said
Without knowing what they are, I would suggest you go see a dermatologist to find out and treat them with the right medicine. They could be acne, they could be an allergy, or reaction to something you can in contact with recently.