It is no way safe visiting prostitute and top of that you made mistake by removing condom so my first advice go to doctor and get yourself checked. It is very normal to have sexual urge and most of the boys at this adolescent age have high sexual urge but that does not mean that you should regularly have sex with prostitute and that too without condom.
Since you are single, you need to depend on masturbation till you found a partner. However, there is no way to control sexual urge except self-control. Set a goal in your life and start working to achieve it. Focus on your goal.