I had an unprotected vaginal sex exposure almost three weeks ago. I have had tests for Chlamydia, and Gonorrhea -which came back negative. I have no signs of herpes and was tested for that as well. My only symptom I've had is a mild discomfort at the tip of my penis. Buring during urination is very slight, not much to speak of. I recently masturbated just to see if there would be any pain - there wasn't. However, when I ejaculated, it first came out as very watery, followed by thicker semen that was yellowish in color. From what I've read on expert forums, Trichomonas may be a possibilty. Does anyone think this may be the case? If so, how can I get tested for this? Simply going to a general practitioner and asking to be tested? I do have a urology appointment, but not until 12/18. I'd like to be treated for this sooner and didn't know if it was possible. Thank you for any response.