Need help finding reliable investigator to find birth parents?

I just recently turned 18 and i sent in a form to Boise, Idaho (if my birth mum sends one in they will match us up). However, I’m not very confident that we will be matched up…Does anyone know of any reliable investigators that would be able to help me find my birth parents (I live in Washington if that makes a difference)...also if they are at least semi affordable that would best, although I know everything comes with a price. Thank you!