Sex on period

I had sex twice on the very first day of my period (heavy bleeding)  with my bf in the shower and he ejaculated in me both times. Gross but he was on military leave and sometimes it just needs to be done. The first day of my period was also the first day of me starting the pill! Do you think I'm okay? I know it's hard to get pregnant while on your period but what are the chances. Especially cause sperm can live in your for seven days and the pill doesn't begin being effective for seven days