Welcome to HealthcareMagic forum.
From what I understand you received an oral sex
from a known/unknown partner on 4th July 2012.
If you were the recipient, then all your upper respiratory symptoms are highly, highly unlikely to be related to oral sex. All the above symptoms mentioned by you are possible in an individual performing/giving oral sex to an infected individual.
You most likely had an infection from other source which is not clearing. Enlarged lymph
nodes are the inflammatory response to it. In some cases they can normally persist for long time. So do not worry. If you are still anxious, getting the test for mono (spot test), HIV
(antibody + P24 antigen duo
test / DNA PCR), strep test
and others can be done from a nearest sexual clinic.
Hope this answers your query.