What do you make of this situation? Am I being followed by the CIA?

I was driving to my buddies house, stopped to get gas, briefly chatted with the clerk (she knows me i am a regular) and about 3 hours later returned to the same gas station to grab a case of beer, when I walked in the clerk immediately said: “omg are you ok!? did anyone get you!?”... I was like “what are you talking about?” She then explained: “when you were in here earlier did you notice the man standing next to the coffee machine? well as soon as you left he got on his cell phone and whoever he was talking to he told them your description, make&model of your car, license plate and what direction you were headed.” I asked if it was one of their plain clothes police officers that they sometimes have monitoring and she said no he wasn’t on that night…I found this extremely odd..I’m not an ex-felon, never been arrested, I have a theory why they (CIA) might have an interest in me (if that’s the case) but am reluctant to say specifically…or maybe they thought I was someone else idk….anyone have any thoughts?