Bed bugs will quickly invade your entire home. They can hide nearly anywhere - behind the baseboards, in cracks, in mattresses, in furniture, etc. You need to get pest control in there NOW.
I highly suggest finding a place to stay in the meantime. You can loose your child if you continue to live in a home infested with bed bugs. Bed bugs do bite and can cause very itchy allergic reactions and irritation.
Another option, which I don't suggest because it doesn't always work in the long run is:
1) Vacuum (throw out the vacuumed up stuff outside) the entire house.
2) Bag up all fabric items (clothing, blankets, clothes) that can be washed on HIGH heat in a washing machine.
3) Buy a couple cans of bed bug killer, spray it everywhere in your home, and leave for 6-8 hours. These cost about $10/per can. Here is a couple products that would work (and I suggest using all three):
Spray: http://www.walmart.com/ip/Harris-Egg-Kill-Bed-Bug-Killer-16-oz/26779792
Flogger: http://www.walmart.com/ip/Hot-Shot-Bedbug-Flea-Fogger-Insecticide-3-count-6-oz/22569723
Powder: http://www.walmart.com/ip/P.-F.-Harris-Mfg.-HDE-8-8-Oz.-Bottle-Bedbug-Killer-Powder/38470735
You would put the floggers in the room, spray where the flogger don't get, and put the powder along the baseboard, and doorway. They also make traps which might also be useful. At the end of the day, expect to pay around $60 for all the products.
4) When you get home, open the windows, wipe down the surfaces (to get rid of chemical residue from the spray), and put away all your clean fabric items.
5) Vacuum again, and dispose of all vacuumed up stuff outside.
6) Place bed bug mattress covers on all mattress to avoid infestation within your home.
The sooner you try to get rid of them the better, because very quickly they can infest the home.