hi there! So sorry to hear you are suffering from the nightmare of bedbugs again!
I do suggest you try out the product I used before, its called Chinchex.
its a bedbug insecticide dust which I found it very effective. Its kids and pets friendly, easy to use and cheap. I used it for about 2 weeks and they were all killed. You can check out their website chinchex.sg for more info and they provide a tutorial video as well, you can follow their instructions and kill those bedbugs yourself. It only takes you about an hour or 2 hours, not necessary to clear out the room as well. its amazing.