FYI- You can't get pregnant shaking hands, nor even is it normal for anyone to be the slightest bit aroused by a hand shake.
But power to you. I'm always thankful for people who give me clear clues that I should steer clear of them.
By the way, why do you shake hands with close relatives? Aren't you afraid of incest?
The fact that close relatives kiss & hug each other as normal means that we are not worried about incest.