Condom got stuck

So on May 19th we had sex, my boyfriend cummed in the condom but we still kept going (with the same condom). Well when we were doing it he slipped out and noticed the condom wasn't on him no more. We quickly looked everywhere then he found it got stuck in me so he pulled it out. When he pulled it out we looked quickly at it and didn't see any of the sperm inside the condom . could there be a possibility?