Opk as hcg test

Anyone tried this? Supposedly an lh test will be positive (2 equally dark lines) when pregnant. So I just took an lh test and had a very light test line. Now I’m all bummed that I’m probably out. Seems like it’d be a little darker if I was pregnant. I have a cb digital I’m waiting to use til my missed period. So using lh just bc I have a bunch.

Anyone tested this thEory?