Thank you for your comment
Oral gonorrhea would be the only possibility from any kind of symptoms that close to the exposure. But most of the time oral gonorrhea does not show symptoms and if it did a sore throat would be it.
I would not worry about an oral sex, they are difficult to get. If you noticed any sores on his penis then that might be something, but without that it's probably a cold.
Oral std is checked for by a throat swab and might take 1 week to show up in a test. The other possibilities from oral sex is herpes and syphilis. Syphilis is rare in developed countries and herpes without sore the chance is small. A blood test is run for syphilis and herpes but those take 6 weeks and 4 months to be found.