So.. What if

Kathleen • 26. Married. TTC baby #1
So my husband and I had sex the other night and he came inside of me... We are trying to conceive. I don't get normal periods but today when I wiped after going to pee I saw a little bit of blood mixed in with white discharge. Not sure if I'm spotting. But my question is even though he came inside me in Friday (it's Tuesday) and I am getting a period could I still get pregnant from that or is that completely out of the question?