Anyone know why!??

I’m on birth control. Just started it about 3 weeks ago. I have about 5 more days until I take my placebo pills. I was spotting 2 days ago And had a yeast infection so I got some medicine for it. The spotting has increased to BLEEDING. If I wasn’t on birth control I’d be on my period right now getting off in a couple days Could I still be having my period right now? Or is something wrong?