 [ Symptoms ] it burns when i have sex does not itch or burn when i pee only during sex and i discharge or a yellow greenish color [ Disease ] hi i would go see your doctor sounds like you have trichomoniasis these are the symptoms trichomoniasis   this infection is caused by a one celled protozoan organism trichomoniasis is almost always spread through sexual contact however the protozoan organism can survive for up to twenty four hours in a moist environment making wet towels or bathing suits possible instruments of transmission from someone with the infection signs and symptoms most men and some women do not display any symptoms which may include yellowgreen frothy discharge foul odor with discharge increased amount of discharge inflammation of vulvavagina increased frequency of urination you do not need all these symptoms even just one will do it do hope this helps you good luck