Oh wow, how unlucky that the cyst grow on a mole! That would have freaked me out! I’m so glad your doctor was able to reassure you though. I had a mole frozen off in March, it’s actislly really satisfying! Watching the ugly thing slowly disappear over the course of two weeks was such a good feeling!
Hopefully your antibiotics will take care of it and it won’t come to that for you though!