text: please! take my advise. take some lube and keep it by the edge of the pool, or else the water with wash away your natural lubricants and it will either hurt or he will not be able to enter you. you can still get pregnant in water, but using a condom in the water makes it more difficult to have sex comfortably. its your choice, but i would go on birth control so you wouldnt have to worry about it.