Bed bugs aren't selective in who they bite, but a lot of people, its thought that it could actually be as high as 60% of the population, just have no reaction to the bites. Some people don't even realize they have an infestation unless they actually see the bugs because they have absolutely no reaction to the bites.
Changed, do you live in an apartment? Mariposa, this could have applied to you as well, in most states (here in the US, obviously, I don't know how this works for the rest of the world so I'm speaking for strictly US residents) if you are renting an apartment, the landlord has to pay any extermination fees for bed bugs. If you are renting a house, if you've just moved in or can prove that the infestation was already there when you moved in (maybe by talking to the previous tenants) they also have to pay for treatment. Unless they can prove that you are the source of the infestation (which most aren't going to bother doing... in Chaged's case I'd suggest not telling them that you probably are the source). There are a lot of effective treatments out there, much safer than diatomaceous earth or DDT, including heat treatments, though those are more expensive so probably not a route a landlord would take. Also, you should never have to throw out any of your stuff, including furniture, because of an infestation. There's almost always some treatment for it. Also, 1 month is not long enough to quarantine something that you know has bed bugs, if you have treated it and are pretty sure that its clean, you shouldn't need to quarantine it, however if you want to just to be safe, in that case 1 month might be sufficient, but if you are quarantining something because you KNOW its infested, you need to do 18 months on average. Thats how long they can survive without food. If you can manage to find a way to totally cut off an air source, make sure its completely air tight, then one month MIGHT be good enough, but I'd suggest longer just to be safe, and again, thats only if you know that its completely air tight.
I got a small infestation a while back and went into panic mode, I spent about 3 days doing almost nothing but research for this, hence knowing the laws associated with it. My infestation came from a neighbor. I was lucky that my landlord was so good about the treatment, a lot of them aren't. They had my apartment and all the neighboring apartments and the hallway treated, which actually works better for them in the long run because that way they can guarantee they've gotten every possible source of the infestation and won't have to start all over again a few months down the line. A lot of landlords might just try to treat your single apartment, which wont necessarily be good enough, and will likely cost them more down the line, so if you have a stubborn landlord, I suggest reminding them that its going to be cheaper for them to do it right the first time.