Advice please -- Opk's say I'm not ovulating

Shelby • 26. Married. Wyatt James 2.26.18 💙⚓️
I've taken an OPK every day and none of them have come back positive. Varying degrees of faint lines, vfl's, and no lines, but no actual positive tests, which sorta sucks because we're TTC. Is this normal? Should I consult my OB? 
Thanks in advance ladies!