I had chronic thrush years and years ago for a long time. It turned out to be the pill. I haven't had thrush for all these years but in the past couple of months before my periods I am getting lots of discharge and really bad thrush again. I don't understand it as I am not on any current treatment for my endo. I will be back on the injections soon but I really dont want to take the HRT because it gives me thrush. Any suggestions please as to why it's happening now. can endo cause this?