Hi, on Feb. 15, I received oral sex and rubbed around in bed without intercourse with a friend.  I did not perform oral sex, I only received.  About 7 days later I thought I had contracted an std since I had cloudy discharge (however no burning during urination).  I went and got tested for std's on two occasions and was negative.  I am 27 years old.  Before my doctor received the results he still treated me for Gonnorhea and Chlym., but the leakage continued in clear form.  The second Dr. which is a urologist also tested me, and said he cannot tell what it is wrong and would like to do a cyto-something, where he goes in through the urethra with a cam to take a look.  I scheduled an appointment for April, however I'm resistant to do this since I don't want this to make the symptoms worse.  He went ahead and prescribed me with Dosycycline 100MG, two daily for 3 weeks.  It is March 22, a week has gone by since I've been taking these and still i have very watery clear discharge.  Not excessive, just drops when i pull up on my shaft.  I notice it when I go to pee.  A few weeks ago I thought it could have been sperm, because it was drying kind of creamish on my underwear, but now it is clear again.  Should I be concerned that this is serious or related to prostate issues?  Please advise.  I didn't get tested for Thricomonaiasis because the oral sex came from a guy, and my understanding is it is more common to get this from vaginal sex.  I would appreciate expert advice and other's that might have related symptoms.