Help clear blue digital ovulation tests

Tanya • Been with hubby for 14 years finally conceived baby #1 after 32 months of trying. We are so overjoyed
Hey ladies 
Well this is my first month using the digitals OPK. Thinking yeah it will take the stress out of it. Lol well I was clearly wrong. Lol I just did the test and its peak! Now yday was low??? I didn't use fmu like it said cos everyone says not to with lh surges. Any insight would be great. Thanks x