What makes me fell uncomfortable?¿?

I think what makes me uncomfortable is when someone is pondering or looking at me for a long time. It's rarely for me to not notice if someone is s or spying on me. It's just like you don't have any idea why they did that. Sometimes, I do feel worried when someone looking at me silently and I just decide to walk away from there just to avoid from dangerous things happen. (Kinda sussy baka for contemplating someone without any reason)