Confused

I’ve had pregnancy scares before so I’m a bit skeptical on jumping to conclusions but about 2 weeks or so ago I was eating a burger and the smell of it was so strong to me it made me nauseous which has never happened before and I’ve been feeling little moments of nausea throughout the day though not always triggered by food smells. I recently just had my period but because I’m on bc pills my period is controlled by when I take that row of pills so is it possible that I could be pregnant and still be having my period?