Opk detecting pregnancy?

Shianne • TTC Baby #1 Praying for my bundle of Joy.
I'm currently 11 dpo & 2 days from "missed" af. I ran out of pregnancy tests so until I make it back to the store I had read about OPKs detecting pregnancy. So I took two at 11 dpo & they came back negative... I'm worried I have no chance of being pregnant now.. Could I still be pregnant? Or am I out?