Its possible, but your odds are a million to one. this is because even with a quite virulent sample, the chances of contracting HIV from a blood-to-blood source (i.e. a needle stick) are about 1 percent from a single exposure. Blood-to-blood exposure is significantly more risky than sexual exposure. This drops dramatically with prep and/ pep treatment to about one chance in a thousand. Also, while a flu-like symptoms are a sign of HIV infection, the symptoms don't tend to develop that quickly- it usually takes at least 90 days to completely serroconvert.Also, the flu-like symptoms typically lack the respiratory symptoms of the flu. (we don't typically see runny nose or a cough with HIV seroconversion. rather, we tend to see the muscle aches, fever, chills, etc. that people can mistake for early signs of the flu.) Though, it is still by all means a good idea to get tested, and a good idea to engage in safe practices from here on out.