I’ve been on my period for 13 days (20 in total this month)

I thought my period started because I was on antibiotics. (My body tends to respond with my period anytime I start new medications, I had an 11 day period when I started my new antidepressants.) The antibiotics caused me to have a yeast infection, so I don’t know if this is even my period. I’m just really annoyed by it because I don’t want to be on my period during finals. My mom told me to stop my birth control until my body stabilizes. I also can’t go to my obgyn until after school let’s out because my mom is too busy. Is there anything I can do to quicken my period? Like how some people say green tea speeds up their periods