Bed bugs were a phase of my life I'm happy to forget lol. When we first had them the apartment manager tried blaming us, then suddenly more tenants were reporting them. One day an apartment door was open that they were cleaning out and from outside the room I could see the signs of them on the corners, turns out a guy was pretty much bed ridden and they were going to town, when he passed the bed bugs migrated to the rest of the unit. I was pissed since we had been battling the apartment folks trying to get us to pay our own treatment, turned out they knew about this situation.

Also, they're pretty incredibly hard to get rid of. Sleep tight, don't let the bed bugs bite is horror words

As someone who had bedbugs in my first shitty apartment, it wouldn't be an overnight thing... by the time you see signs of them they've been there a minute