Ug, being on my period sucks. I had two CYSTS on my chin. The spiro makes them go down so much quicker, but it's still torture. I think I may need to go on birth control for this aspect to go away, but it's still loads better than the mess of cysts everywhere that I had before. I got them both two days ago, and they're both shrinking dramatically. I'm confident they'll be gone in the next few days. Otherwise, spiro has been great. I'm pretty clear except the week before that time of the month.