3 things

So my bf and I had sex on the 10th (Sunday) 2 different times & he finished inside me both times, I’m supposed to start my period today (Wednesday ) & I haven’t started yet.

1) is there a chance I could get pregnant?

2) Also If we did happen to conceive would

my period for this month still come? (Tomorrow)

3) if I do get my period today does that mean I’m not pregnant or there is still a chance?