strange day, strange guy

today a guy in a black sweatshirt followed me to the market. 

I had left the house alone to go to the market to buy bread, milk and water. 

It was around 5pm, and initially I didn't even want to go, but my mother asked and out of politeness I went. 

I left with nothing, no cell phone, practically nothing, just my credit card and a folded bag to carry my things. As I left the house, I looked to the side and noticed the man looking at me, his eyes fixed on me. He started to cross the street towards me, so on instinct, I quickly crossed and walked quickly to the market.

 When I took everything and put it at the register, I was looking outside the market, focused, then the cashier girl called me two or three times, and I didn't hear it, until the fourth time I looked at her, a little confused. Then, while I was paying, I saw the guy passing by the market and looking at me again, walking straight past with his eyes glued to me. I may be paranoid, but I saw another guy looking at me next to him, also in a hoodie.