HIV Scare. Responses appreciated.

I'm 19 and have only recently become sexually active. Two weeks ago I topped a guy my age unprotected. He hadn't hooked up with many people either, but claimed he had used a condom with some and barebacked with others. Recently I am having Flu-like symptoms like a sore throat, stuffy nose, and headaches. I've been reading that these can be symptoms of HIV if experienced two weeks after sex. However, It is flu season and I handle money, products, and use the keyboards on some computers at work regularly and have forgotten to wash my hands before taking my lunch break a few times. Around Christmas time my boss was sick as well, so i wonder If i caught something from her. I plan on getting tested soon, but how worried should I be? This whole situation is making me super anxious, I feel like my life would be totally over if i was positive.