Is it common after having anal intercourse (one night fling) for the man s semen to drain into the vagina? In addition, if a man does not climax/orgasm during anal intercourse, but drains semen (unknowingly and a limited amount), is it still common for this semen to drain out and into the vagina? Lastly, is it still common for the semen that drained into the vagina to not have sperm in it รข?? but sperm is found on underwear and outside of vagina next to vagina? Seriously, what are chances of pre-seminal fluid, small amount, leaking from rectal into the vagina? I appreciate your help. I cant seem to find anyone who can answer this.