I Want To Know If There Is A Posibility Of

i want to know if there is a posibility of becoming pregnant.... i had my nexplanon removed octber 20 and my period began on the 16 but ended on the 23 i had sex the 16, 21, and 25 .... he always pulls out and goes to the restroom after we do it but this time he didnt go and just cleaned himself and we did it again .... could there be a posibility of me being pregnant