After a very low risk unprotected vaginal exposure, I went to a state STD clinic where they did a urethral swab for gonn, chlamydia and NGU. The also did a gram stain. At the time they reported no white blood cells, no sign of infection, no mention of trich. My cultures came back negative. I am very nervous about the whole thing, and about a week ago I started to have some itching/burning in the urethra after masturbating. It only happens when I ejactulate (and for a few minutes/hours afterward) and no other symptoms. Is trich possible? I am not sure they could find it at the clinic or not. Any comments or thoughts? The good doctors told me to accept me negative test results and move on, which I am trying to do. Guilt, as it has with many others on here, overcomes me. Thanks.