Hello, I would be happy to help you with your question.
The antifungal medication does NOT affect the way that the birth control pills works - it is not the cause of your early period. In terms of the early period, this might just be related to taking the pill and thinning of the lining of the uterus
which leads to early breakthrough bleeding
. Ask you doctor about a new pill and check a pregnancy
I hope that this helps and good luck!