AIO for being paranoid

I went outside to grab my DoorDash from the side of my building, which isn’t super well-lit. After I scanned my fingerprint to get back in, the dasher took off. Like always, I looked back before heading up the stairs and thought I was completely alone. The door to my building is really loud when it opens, so I would’ve heard if someone came in behind me.

As I was walking up, I suddenly heard someone skipping steps, coming up fast. I never heard the fingerprint scanner beep or the door unlocking, which means he must have slipped in right behind me when I wasn’t looking and grabbed the door before it shut. That freaked me out. He was in a hoodie, all dark clothes, head down, moving quickly. He also just looked old.

I don’t like the idea of a man speeding up behind me, especially in a stairwell where I’m alone. I figured maybe he was just in a rush to get somewhere, so I stopped thinking he’d turn somewhere else. But nope, he was going to the exact same floor as me, and I was already scanning my finger. That’s when I really started feeling uneasy.

I was on FaceTime with my mom the whole time, and right as I got to the door to scan, she told me she had to go. She had no idea what was happening, but that scared me even more because I didn’t want to be completely alone with this man or seem like I’m scared of him. I didn’t like him behind me, so I held the door open for him to go ahead. He walked in front of me into the hallway, but he kept looking back at me, which made me even more uncomfortable.

I stopped at someone else’s door to trick him, but as soon as he wasn’t looking, I bolted inside my apartment and locked the door.

Now I’m sitting here and won’t stop shaking. Am I just paranoid, or was that actually really sketchy? I mean I never actually saw him scan his fingerprint and I’m usually fine with most men with me alone.