postpartum asthma!! Help!

FTM here, LO is 10 days. Does anyone have any experience with postpartum asthma? I was mostly fine throughout pregnancy, just used my albuterol inhaler at times. But now that I'm breastfeeding, I get flareups almost daily! The phlegm is a major problem and I can't sleep on my back or even propped up on a wedge. It's as if the milk boobs are stressing my lungs out. Anybody else suffering and what did you do?