Ugh.. I had a problem with bedbugs earlier this year. But the infestation was there already when we moved in to a new apartment. On top of it, there was a roach infestation. It was probably one of the grossest/shittiest times in my life, albeit fairly short (luckily). I had to stay in the apartment for a week or two since it was my only place to stay close to my college. I didn't realize there were bedbugs until the 2nd or 3rd night when I saw one drop down next to me. One thing they do is climb up the walls, and when they feel warmth they'll drop down to it and find the source. Ugh, just thinking of it makes me naseous and creeped out all over again. I got very little sleep for that time, and tried everything to minimize the bed bug bites until I could move out, but really nothing was very effective.
When I moved out, I had to wash everything, literally. And I had to throw away my favorite chair, because both roaches and bed bugs are so easy to cary. It was kinda sad . I also had to throw away my lovely foam mattress.
I was incredibly lucky that I carried very few bugs with me to my next place (it's near impossible not to carry a few). Only found about 3 roaches at my new place, killed them right away. Found two live bed bugs, and later on one dead one. The exterminator said it was great that it was dead, and that the only other one was found in the hallway, because it was looking for blood I guess, and hadn't found either of us yet. That was a couple months ago, and the roach was several months ago. So we are clean. What a relief. Ugh, but that time in the other apartment was terrible. I was to the point of tears every night after the first week or less, but maybe I'm a pansy for it. Or maybe not, because it's pretty shitty not to be able to sleep because you're scared of roaches and bed bugs climbing all over you at night. I had to call my mom in the middle of the night for consolation, lol.
Anyway, good luck! I know it's a disgusting and hellish situation.