i’m not sure?

i’m on the pill, the one where you take the 7 day break to bleed. i took my last pill on wednesday just gone and normally only start to bleed like yesterday for only a couple of days. yesterday day time i had a little bit of bloody discharge but me and my partner had sex in the evening- forgetting this he finished inside of me. about an hour after i was bleeding heavily along with the remains of him. is there any chance of pregnancy??