Why is it hard to breathe in my bedroom.

So, I just moved into this new apartment with my roommate. I took the master bedroom. Everything is nice about it but when I try to sleep during the night with my door closed, I feel like I can’t breathe. I feel some sort of pressure is pressing me and I’m about to faint. It feels like there is no air in the room. The ac is on, living room is chill and when I check the vent the air is also coming but every night I feel the same. Then, I just keep the door open and sleep and it will be normal. I even asked the apartment, they checked and couldn’t find anything with the hvac or ac. It sounds like a me problem, but when I slept in my friend’s house, I had no problem sleeping, even with the door open I don’t have problem sleeping but when I close the door and lay down after a few mins it feels like the air the sucked out and I’m under huge pressure.Did anyone encounter anything like this and suggest any suggestions?