“Fear of pregnancy?”

Myself and wife were romancing ourselves last week Saturday which was 11 days after the start date of her period. Can sperm go through my own two-layer of clothes and her own two later of clothes although almost the same texture of clothes. There was no direct contact between the male and female sex organs at all. Out of curiosity, I asked to take postinor 2 at about 40 hours after the whole thing. Is it possible for her to be pregnant as a result of sperm moving through the layers of the cloth we both wore?