scared without reason?

being out of sync at work is one thing but feeling worried and scared while on my way home without any reason at all is another thing.

me being out of sync at work is normal. it happens once in a while and that does not worry me. yes, my performance may be affected but i accept that. but the event while on my way home bothers me.

there was nothing different or new along the way on my way home. the usual walk from the office to the train station, the train full of people, nothing different. but as i was standing inside the crowded train. i suddenly got scared but as i was looking around, there was nothing to be scared of. but the feeling stayed till i exited that train. as i was walking i was sure nobody was following me. i pass by the same way everyday so i was already familiar with it but still had that worried and scared feeling. i would usually walk home from the train station to my house but tonight, i took the tricycle becuase i did not want to tempt fate and my instinct was to go home as soon as possible. when i got home, the feeling faded away but still, it bothers me.