No second line on OPK ever?!?!

Rebecca

Has anyone else experienced this??? I've been testing every day twice a day and have NEVER seen any kind of second line? Maybe a slight shadow if you squint your eyes but nothing even close to a positive. Weve been TTC for 16 months now and this is my first time <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> per request of my GYNO. All my blood work came back normal and my uterus/ovaries look normal as well.

My cycles are 38 days long so I should have O'd on the 24th. Has any one elses cycles looked like this before??? Please help!! I'm so lost.