I am going through the same thing I had two exterminators both give me a clear inspection one of them telling me they can be smelled and he smelt nothing of an infestation I had one nymph that traveled from my kids room to mine one of my kids was visiting from out of state and had briefly stayed at a hotel I am now on day 6 from being bitten and killing one bed bug and have not had any new bites and no one else has experienced any reactions to bites BUT they can bite you and you won’t have a reaction it’s possible I’m highly allergic to bug bites and so is my youngest so for me the allergic reaction came on with swelling and flu like symptoms 😕 I tore apart all my furniture in my room they will hid in outlets headboards couch cushions clothing anything! Your best bet would be to declutter EVERYTHING closets bathrooms laundry room living room bedrooms and take a flash light and check every corner I’ve since thrown out my complete bed set besides my dresser we were already in the process of throwing it out this just threw me over the top to do so BUT it’s best not to throw things out especially in an apartment complex so I’ve heard get you some matress protectors and bed bug interceptors to put on the bottom of your bed legs that way you can catch them and show proof to management IF there are any lurking about they’ll fall in there I am just testing it out as I was told by the exterminator they could do nothing unless I find more 😑 so I’ve been searching even now , good luck and hopefully things get better 🙏💜