I lost my birth control

I’m in a bad living situation currently, had to pack all of my things up Tuesday, and move suddenly. I got off my period the day before. I packed up my meds and lost track of them somehow. They’re in a storage unit somewhere. Me and my boyfriend went for 4 rounds Wednesday. I wasn’t ovulating! We used a condom part of the time and then took it off. He didn’t finish inside me either! But I started spotting yesterday, which never usually happens. Could it be because that was my first time going for more than one round? Or because I haven’t taken my meds so my body is adjusting? Any other ideas?