Girls, What is going on with this guy?

Hi everyone! I am new here. Just need some advice or thoughts, to be honest. I work in retail and go to med school. There is a worker not a boss be he is above me in job title, who works there, he followed me all over and stares non stop. He is thirty three, lives with his mom and has seven kids, has slept with half the store, I am in no way interested. He finally left the store in my city, to work where he lives. It is about forty minutes from the city of the store where I work and live. I'm not sure if I am making too much of it or being cautious for a reason. I only work there two days now and he comes down on the days I work every other week or so, drives forty some minutes, stares when he sees me and runs around the store being everywhere I am says nothing and then leaves? If I leave the store, like the end of my shift he is sitting in the parking lot watching me in his car, he stares it creeps me out? During the winter he wore a disguise like would wear a mask and then a hoodie, now in the summer he cannot do that. I don't want to make too much of it but I also do not want to underestimate anyone? We never dated, barley spoke, never went out but he used to yell at other male employees for talking to me. If anyone can give me some feedback, I really appreciate it! Thank you so much!!

Girls, What is going on with this guy?
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