Is his semen still active?

I gave my bf head and he “nutted.” We then went out to eat and spent about an hour eating there. Once we were done, we felt frisky and decided to have sex. However, we didn’t use a condom right immediately (we probs waited like 1minute until putting the condom on). Mind you, my bf was wearing his underwear ( boxer briefs/tight ones) and some basketball shorts. Do you think the semen from earlier could have been active still? Is there a possibility of me getting pregnant?