I don't know what to think... please help

Heather • 💙Otto Wayne 9/7/18 💙💚Owen David 5/22/20💚
Yesterday I rcvd this faint faint positive (in person it's darker and def. pink) 10dpo
But this morning I re-tested and rcvd this 
BFN @ 11dpo
Do you think I got a faulty test, chemical pregnancy or maybe still have a chance?!?!