Want to adopt

Stephanie
My husband and I really want to adopt, but it's so expensive to use an agency. We were told the best way to go is to find a teenage mom who wants to put their child up for adoption.  
​We've told all our friends and family we want to adopt, but don't really know where to find someone seeking adoption. And it seems weird to me to directly ask someone if they've considered adoption. 
​Anyone have any tips on how to find potential birth moms without being creepy abut it?