confused😖

hi everyone, just wanted to ask coz im confused at this point of time if ill be pregnant or not. i gave my last period last october 20 and it lasted for about 4 days my boyfrend is usuallt using widrowal but today nov. 1 we make out but he didnt pull it out. my question is. is there a chance that ill be pregnant? im not worry getting pregnant because we've been together for 10yrs but im still not ready.please help me out.thanks.