Period suddenly stopped after sex?

I was only about halfway through my period and was in a heavy flow when I had sex several times with my partner in about a 12 hour period, no protection or withdrawal since I was on my period. But then the period suddenly stopped during sex and never came back. I even tried to get the cum out but I guess it already went in the cervix because I couldn’t find anything. 💀 Does this mean I could potentially get pregnant or am I good?