After derma rolling two days ago I noticed a small cluster of tiny, slightly pinkish bumps/spots between my eyebrows (I do not suffer from acne but like most people, I do get the occasional spot). I'm hoping they could be as a result of threading my brows at home. I'm pretty sure they were not there before I rolled though which is why I'm so confused. I did not notice anything.At the same time I'm slightly concerned that they could be regular pimples and I may have contaminated my derma roller. The last thing I need is to spread spots all over my face next time I derma roll!I made sure to steriliyze my derma roller with 70% isopropyl alcohol after I used it. Would this be enough to kill the bacteria//infection if they were regular pimples?