I'm starting to suspect that milk/dairy was the culprit. I have eaten very little dairy in the past 35 days, just a little bit of milk to wet my small bowl of cereal at breakfast. When I had my horrendous breakout in December & January, I was eating a lot of yogurt. And though I has no breakouts whilst taking antibiotics through February and March and was regularly eating yogurt, I starting breaking out soon after the antibiotics finished. Since I replaced the milk with almond milk last week, I haven't had even one new spot. Interesting.