Need some insight please!

Katelin
Has anybody every gotten a faint line on a test but when they test the next few days it doesn't show up at all? 
Anybody that has had this to them happen end up pregnant? 
I got the faintest line (only double lines I've ever gotten are from OPKs) and I was super excited. I don't want to get my hopes up. But I also hope it wasn't a faulty test. 😔