Welcome to our site. I hope that my comments will be helpful to you in sorting this out. I congratulate you on the thoughtful approach your are taking to this problem, as well as the steps you have already taken to address them. Although receipt of oral sex is virtually no risk for HIV and low risk for other STDs, sometimes folks can get NGU or other symptomatic problems through this means. Several thoughts occur to me.
First, I want to be sure that your specimen was taken properly. The best specimens for diagnosis of an STD are the initial portion of a urine specimen of a swab taken after a person has not urinated for an hour or more. While it does not occur often, tests can be falsely negative if the proper specimen is not taken. In addition, even with optimal specimens, sometimes there are false negative results. If your symptoms are continuing (and based on your history, I presume they are), a second test might be in order.
Secondly, there are a number of non-infectious causes of both penile discomfort and even secretion or discharge from the penis. For instance, kidney stones can cause the sort of discomfort you describe. A doctor would start to diagnose this by looking for small amounts (microscopic) of blood in the urine. Alternatively, the glands of the genital tract (prostate, etc) can produce secretions which can mimic infectious discharge from time to time- they typically go un-noticed unless one is looking for them.
Finally, sometimes after an exposure that, in retrospect, one wishes they had not had, persons tend to examine themselves and be far more attuned to genital sensations than in periods when they are not concerned. This in turns leads to noticing what turn out to be normal sensations that might have been not noticed or ignored at other times. Perhaps this was a contributor to your situation although I would explore the first two possibilities first.
Hope these suggestions are helpful to you. EWH.
Also, I am experiencing more discharge and discomfort.
Hello Dr. and thank you for your response. However today i woke up to notice that I have a lot more white discharge, and my penis burns when urinating really bad, it has increased over night. A urine sample was taken yesterday after they had looked for white cells for the infection. What can I do?? I need to take something for the pain and discharge, it wont let me sleep.
Please re-read my answer- I would get it checked again. I outlined the details in my answer. EWH
Yes, I just got back from my doctor and I was treated for STD's just in case. I will know in a few days if i did had anything. Thanks.