So on my first day of period things escalated with my bf and we had unprotected sex. It was like 1min only and we didnt continue anymore. Im usualy a 30 day cycle girl sometimes 27 sometimes 24 so idk if i would ovulate early

That happened on the first day of my period and my period lasted for 5 days. What are the chances of getting pregnant?? Im worried about it. Please be nice im usually careful but this was this one instance we weren’t careful.