I have started minocycline about a month ago because I would get these awful cystic bumps all over my jaw line, chin, and forehead. It has stopped the pain and the size of the bumps have decreased but I'm still getting acne. I notice people have better skin in two weeks or something but it hasn't happened to me. I still plan on taking the medication but I'm worried that the medicine is not helping as much as it is for others. How fast does Minocycline work?