About 9 months ago I thought I was exposed to an STD .. my Dr. treated me for both Gohnorreah and Clymidia with single does treatments for both. the symptoms went away for a short while and then came back, some level of discomfort in my scrotum, No pain during urination and clear mucusy discharge from my penis .. I went and had a full STD screening and it was negative. now some 4 months later I have the same symptoms again .. I have had a single treatment of 3g Amoxicillan.. my Dr. is not very comfortable with the STD situation and I am at some what of a loss as to what it could be ... any ideas?