Me And My Girlfriend Were Fooling Around Yesterdat While I

Me and my girlfriend were fooling around yesterdat while I had my pants and boxers off and she was on her period she was only wearing her underwear and a pad under that I had came well over 10 minutes before but no where near that area and she's been on her period since Friday the 23rd is there a low or high chance of her getting pregnant? Or none at all?