If a guy cums on your upper thigh (near V) during the shower, is it possible for the sperm to swim in the stream to the vagina?

About swimming. Salmon swim upstream to the same area where they hatched. Sperm are so small that you can't even see one with a magnifying glass. Being in the shower means the water is coming down from above, at 2 gallons per minute, unless it's one of those fancy Jacuzzi showers with water going sideways. Anyway, sperm are not salmon and cannot swim upriver to migrate into a vagina for spawning. No worries.