OPK results, we need help please!

Christina
Right now we're confused with the OPK's. We're waiting for a positive surge to begin insemination. We have bought allll types of testers, cheap, expensive, digital, all types and it's just so confusing and frustrating. I'm on CD13...PLEASE HELP US!!!!! 
Top 2 are this morning
Bottom 2 are just 20 minutes ago