Is it necessary to take an emergency contraception pill just for accidently wiping my vagina softly with a wipe containing fresh semen?

Maybe (not) . . .: There are no guarantees in life. Birth control lowers risk of pregnancy but can't prevent one if not used regularly as directed. Condoms can lower risk of pregnancy & std/stis but again there's no guarantee. Even tubal ligation isn't 100% perfect. Chances of getting pregnant by wiping yourself w/cloth containing fresh semen is low but is it worth risk? Why wipe in 1st place? Unsafe sex is risky.