I only just saw this thread and I am thrilled for you that it has now cleared up!

I find that I get nasty acne and clogging on my jawline, shoulders and chest (not so much on the face except a random one or two) in early PG (like now but it's easing up ATM) when I went off the pill or my baby weans. It's just horrific and very painful. The weird thing is that it seems to clear up just as quickly as it begins.
Back when we were a couple of months from our wedding we made the decision to go off the pill as we wanted to TTC straight away but I had to go back on it as it was terrible and not a good look in a sweetheart neckline.

I have found that glycolic products like AlphaH have worked wonders for my skin when it's been really bad.