Is this my period or could I be pregnant?

My period is due to start and this is what I got? I’m having some light cramping and I started birth control about two months ago. Usually the first day of my period is really heavy but I’ve never had anything like this before. I had unprotected sex a few weeks ago but he pulled out and it was right after my period ended. Is this because of the birth control or do I need to worry? This was the second or third time I wiped so there was more the first time