I don't think you are doing anything wrong TTC takes time and patience (a virtue I am NOT blessed with).

I gave up temping but still do OPK's and keep my eye out on the CM. I find that because temping is an everyday event, it caused me to obsess too much. If you wanted to go back to the "relax" plan, perhaps consider that, and just BD as much as you can within the fertile window?

Best of luck, I hope you are wrong and you have caught the egg without feeling it.