my girlfriend and i had protected sex the other day. when i was finished i went to the sink and washed up with soap and water. after i went back to the bed and we started making out. she then got on top of me and started grinding on my penis while we were both naked. my penis never penetrated her vagina but is it possible that live sperm could come out of the precm and swim inside her. she was only grinding on me for about 3 minutes and this was 14 days after her period meaning she was fertile. thank you in advance for the response