Would anal chlamydia or gonorrhea show up on a urine test?

[Medren]

Help please!  I am male.
6 weeks ago I had unprotected oral-genital and oral-anal sex (in both instances he went down on me), and there was very brief genital-genital contact.  This is the first time I've had sexual contact.
3 weeks following the encounter I started having the frequent urge to urinate.  1 week after this symptom I went to get an STD test.   They did a blood test, swab of the urethra and urine test, all of which came back negative for all STDs.
5 weeks after the encounter the frequent urge to urinate stopped, however as this stopped I started developing discomfort in my anus.
There was mild burning/itching at first, and 3 days after this started I decided to check my anus and noticed a segment of the anus is slightly swollen in a line leading down to the hole, and at the end of this swelling is a tiny red bump.
I went to the GUM clinic again and was told this bump was neither herpes nor genital warts so I was sent home.

The issues with my anus have continued, and there is consistent feeling of fullness/like I need to have a bowel movement, which returns shortly after any bowel movement I have.  I've never had to go more than once a day so this is unusual.
I've considered what this could be, and realised that seeing as they didn't swab my rectum how would they know if I had anal gonorrhea/chlamydia?

Please help!  I have to wait till Tuesday before the GUM clinic is open again.

[Vance2335]

Reread what I wrote I believe I answered that question twice.

[Medren]

Thanks for your reply!
Do you think this is STD related at all?
Thanks again!  It's really hard to stop panicking at the moment.

[Vance2335]

highly doubt this would be anal gonorrhea or chlamydia. You came up negative for both on the penis tests and getting it analy from oral...unlikely.

And to your question no a penis swab/urine would not show an anal infection.