OPK Question

Danielle • Married since Jan 2012, TTC #1 since Sept 2014, pregnancy losses Sept 2015 and Oct 2016, praying for our rainbow baby.
Is it possible to miss your Lh surge even with testing twice daily? My OPKs stated out normal, light then proceeded to get darker, but never actually got dark enough to be considered positive, and then went light again. My BBT does show a spike in temps immediately following when I should've ovulated and has stayed consistently high since.