Sex on Period, Can I get Pregnant?

So my boyfriend is pretty amazing and completely understanding when it comes to having sex whilst I’m on my period. In fact, during the time of the month where I feel horrible he still makes me feel sexy!

Today, he ejaculated inside of me (with my full consent) on day 2 of my period... could I get pregnant?

What are the chances of achieving pregnancy whilst bleeding?

Has anybody got pregnant from having sex on their period?