If I masterbated in the room and ejaculates on tissue paper and while ejaculation some amount of sperm soaked through tissue paper and comes on my hand and then I uses the same hand to touch the handle of the door for opening it and after 5 min my sister comes in room and she touches the same handle and same area of door. After 10 min from touching the handle of the door where a little amount of sperm is present she went to toilet . So my question is can she become pregnant by this act?? Please help doctor?? As I am very afraid 😱😫😖