Please help we're got bed bugs everywhere?

here's the problem we moved in to this house which already had bedbugs well me have tried to bomb all floors didn't work we tried sprays around our bed didn't work very long at all. it's so bad of a infest ion that you can see the little nasty things crawling on our bed all day and night long and the other day i saw that they are in my picture frame's in my room my brother also has them in his room really bad but not as bad as me and my husband our four daughter hasn't got them in her room yet and my mom has got like two or three but that's it. we're don't have the money what so ever to have a pro come in and do it and it's gotten bad since my bed is really bad with them i tried sleeping on the floor in my room and after like a two or three day's got me there now i have to sleep down stairs so i can have a good night sleep but i worry about my almost three old son he's still in a crib and he's in our room alone i hate it i don't want him to get bite by them they haven't got in his bed or anything but i am scared that cause me and my husband aren't up there that they will....PLEASE anyone can you help me find a way to get rid of them for good. Do you think it would help if i throw my bed out? anything please any advice will help. Sorry for it being so long.