Pre-ejaculate fluid fell on undergarment beside vaginal region. is pregnancy possible.can semen pass through clothes.contradictory answers on the site?

No. But if worried..: Pregnancy won't happen if the sperm can't get into the vagina, or if the sperm are just a little bit into the vagina and can't swim all the way up through the cervix and beyond. Life sometimes will surprise people, because people having sex are not thinking of the details (like exactly when and where a finger, a penis, or sperm are located). One can do a pregnancy test 3 weeks after sex.