I think you're exactly right about clap (gonorrhea), not chlamydia. Nongonococcal urethritis (NGU) -- usually called nonspecific urethritis (NSU) in the UK -- is often caused by chlamydia, but regardless of the specific cause, typically doesn't cause symptoms until 1-2 weeks after exposure, whereas gonorrhea typically shows up in 2-5 days. (The initial irritation the next morning probably was just physical irritation, as you suspected.) If it's gonorrhea, over the next few days the discharge probably will become more purulent (pus-like, i.e. thicker, creamy) and painful urination could become quite severe quite rapidly.

Accordingly, I wouldn't wait. Try calling the GUM clinic, tell them that you suspect gonorrhea based on rapid onset of symptoms (and, if you like, my opinion) -- my guess is they'll try to find a way to see you quickly. But if they cannot, for sure see someone in the next day or two.

I hope this is helpful. Please return with a follow up comment and let me know how this turns out. In the meantime, get in touch with your partner, who also should be tested and treated.

Best wishes--  HHH, MD

Thank you for the reply Doctor, it got me there that much faster. I'll be contacting my partner today so she can get herself treated.

You were overtreated. Both CDC in the US (www.cdc.gov/std) and the British Association for Sexual Health and HIV (BASHH) (https://www.bashh.org/guidelines) recommend ceftriaxone (Rocephin) plus single dose oral azithromycin (Zithromax), as you were given. The US guidelines suggest doxycycline as an alternative to azithromycin, but neither agency (and no experts) recommend giving both drugs. It is unnecessary overkill. You might contact the urgent care clinic and confirm you really need to continue the doxy. My guess is the clinic just isn't up to speed on standard recommendations. It probably won't hurt anything to continue doxy, but overuse of antibiotics is a major problem in all societies and ought to be limited whenever possible.

Anyway, glad it's under control and your partner will be treated soon as well.

I am from the USA :). I used the term "GUM" because I see it often, but I'm gathering that is the term only in the UK. But when I searched for GUM in my local area it came up with sex health clinics so I assumed that was a world wide term. I am in RI if that matters. I did text my partner, though she is not the fastest to respond. But I will have contact with her by tomorrow if not tonight. 

The Doctor said he was confident it was Gonorrhea, and that they treat cases quite often(several times a week). Nonetheless, I will contact them tomorrow and verify that the doxy is necessary. Of the 3, it is one I have experience with in the past, and does give me a good amount of digestive distress. I agree as well that antibiotics are way overused, and its sending us for an interesting future. 

Already the discharge seems to be down to almost nothing and most of the discomfort that had been growing over the last 24 hours has subsided. 

Again, thanks :)

Probably your clinic thinks you have gonorrhea for the same reason I did, i.e. quick onset of symptoms. In itself, WBC in the urine says only there is inflammation in the urinary tract, without any implications of the cause. Even though they used the term UTI, their treatment doesn't indicate they believe that's what you have. (*UTI" is used almost exclusively to mean non-STD infections.) Presumably they alo examined you to observe urethral discharge, right?

I explained when and what happened. He did check me out pants off, and he saw discharge. He did the ol' cough test with each testicle as well, checking for any pain which there was none. 

He only said that it was "standard operating protocol" for the meds he gave me. I am not sure what info he is going off there, if it is from the CDC or local health department. Maybe its just a "cover all bases" approach that blankets all types of infection(ie urethra and rectal)? FWIW, I have gone to this urgent care several times, I've never had reason to doubt them. But this is also the first time I have presented a likely STI to them as well...usually its been for strep, ear infections, etc. 

You should have a blood test HIV in a few weeks. The occurrence of gonorrhea is a strong indicator of increased HIV risk. The odds still are strongly in your favor, but better safe than sorry! Or if you're in touch with your partner and she is tested now and negative, then feel free to forego it. (A case also could be made for syphilis testing, except that ceftriaxone etc would abort incubating syphilis if you were exposed.)

That completes the two follow-up comments and replies included with each question, and so will end this thread. I hope the discussion has been helpful. Best wishes and stay safe.