When I perform oral sex on my boyfriend, I let him finish in my mouth. Does the sperm die there? I'm concerned because we've started doing this thing where I lick his fingers before he fingers me, to kill off any sperm that his hand may have come in contact with. Now I'm scared that some sperm that was in my mouth may have actually transferred to his fingers while I licked them. Is that possible? Is there a pregnancy concern here?
As an additional note I also just got off my period yesterday, so I'm probably not fertile right?