Hi, i am just curious to know. I was bathing with a pool of water, while i was bathing, i noticed a green substance at the floor of the pool that contains the water. A few days later my friend told me that was algae. At the point of time when i was bathing, i used the water to wash my penis and the inside of of penis...i know this is a stupid question but will i get contact with any stds just by this action.