I am really excited after reading this thread. I know it is of no excitement to you (or anyone dealing with bed bugs) but I am extremely interested!
I work at an entomology lab and my research is actually focused on the bed bug, Cimex lectularius. I have 5 colonies of field-collected and laboratory-reared strains and do a lot of work with efficacy of products against them. I know it is a pain to deal with (yes, I have experienced bed bug bites and welt reactions as I wanted to determine what type of reaction I would have and the extent) and difficult to eradicate due to their resistance to many pyrethrin-based pesticides but I am extremely interested in any information you could give me, especially if you have actually seen them on your chinchilla and if it fed on your chinchilla. Pictures are helpful also.
I can also give you input on my experience of treatment (we have tested probably every product on the market that has a label claim against bed bugs, both rapid-kill and Insect Growth Regulators), traps, and Integrated Pest Management which may be helpful.
Luckily, bed bugs are not known to transmit any diseases like mosquitoes and ticks are capable of so there is no health threat to you or your chinchilla. However, they can cause a lot of irritation as those bed bug bites welt up and become extremely itchy!
I am going to PM you...