Oral gonorrhea is actually pharyngeal, i.e. the back of the throat. It is unlikely you would acquire it just by getting a little semen in the mouth, although I can't say it would be impossible. However, pharyngeal gonorrhea is usually (over 90% of cases) asymptomatic, with no pain or anything else. Here too there are exceptions, and once in a while it causes severe pharyngitis like yours. So the direct answer is yes, this could possibly be what you have. But it is very unlikely. By far the most likely explanation is a virus or other infection.
Clarithromycin (Biaxin®) is not reliable against gonorrhea, although the fairly large dose you were given might be effective. If you promptly discuss your gonorrhea concern with the doctor's office -- i.e. before you have taken the antibiotic more than a day or two -- a culture test could be done. If that isn't feasible, I suggest you just sit tight and see how your symptoms do. Assuming things get better -- either because of the Biaxin or because viral infections usually clear up pretty quickly on their own -- you could have a follow-up swab test for pharyngeal gonorrhea in 2-3 weeks.
Good luck.
Have u had a swab for oral thrush? That could be a possibility? And it wouldn't be treated by antibiotics.
Also can I ask, I've had 2 throat swabs, one for thrush and one for gonorrhoea. My thrush swab came back positive so I'm taking tablets for that. I'm still worried for gonorrhoea but I'm concerned if I have oral thrush that the gonorrhoea might not be picked up?
I know oral gonorrhoea isn't common but I got a sore throat about 2 days after giving oral sex and it hasn't gone since(6weeks)! And the discomfort is right down my throat.