looking for opinions on the chance of pregnancy based on the following:

precum (not ejaculate) on vulva (not inside vagina)
was using ky lube on vulva
2 days after blood from period stopped, regularily means vaginal dryness
rinsed off vulva with tap water immediately

other thoughts:

precum does or does not contain sperm? it makes sense to me that precum, coming from cowper's gland, has nothing to do with where sperm comes from (testes). as long as there isn't sperm residing inside the urethra from a previous ejaculation, no sperm should be present in precum.

does chlorine in tap water kill sperm? does water kill sperm? some say yes because water caused the sperm to contract and burst.

thanks for your input