No risk from this encounter, documented studies involving couples where one is positive and have participated in unprotected oral sex hasn't resulted in one case of transmission.
As you will probably read on previous questions HIV cant be diagnosed by symptoms, that said your symptoms aren't typical of ARS, (early symptoms).Within 2-4 weeks after HIV infection, many, but not all, people experience flu-like symptoms, often described as the “worst flu ever.” This is called acute retroviral syndrome (ARS) and it’s the body’s natural response to the HIV infection.
Symptoms can include:
•Fever (this is the most common symptom)
•Muscle and joint aches and pains
These symptoms can last anywhere from a few days to several weeks.
The only way to be sure is get tested, generally all tests are considered conclusive at 13 weeks post exposure.