Adopting

SABRINA
We have been trying over a year now and haven't prevented getting pregnant for 4 years. We've been tested some but insurance doesn't cover infertility test so we stopped testing due to $1400 medical bills in one month. 
When should we start to look at other options? IE adopting or <a href="https://glowing.com/glow-fertility-program">IVF</a>.
Has anyone adopted? How was the process and has the placement been successful? 
Thanks to all for any advice.