the menstrual cycle, which may cause monthly thrush episodes. hormonal or vaginal pH changes. sexual activity. having a weakened immune system (such as HIV or chemotherapy treatments)

What if thrush keeps coming back?

If you are experiencing recurring thrush, you should see your GP. Your GP or a healthcare professional at a sexual health clinic may be able to help find the cause of the thrush you are experiencing.

Why do I keep getting thrush every month?

High levels of estrogen cause Candida fungi to overgrow. Because of this, it's common to get a yeast infection around the time of your period. Some people get yeast infections around the same time of their cycle every month, a condition called cyclic vulvovaginitis.