Sexual Advice: Worried After Unprotected Sex

Question. I am sexually involved with two college friends of mine. We are all the same age. We have consensual and casual sex. I recently had unprotected sex with both of them at the same time and I am sure they are safe, infection free and clean, just as I am. Are we at a risk of an infection, or an STD?

Answer. After having unprotected sex with two partners, you can never be sure that you will be free from an STD or an unwanted pregnancy.