You're not alone. I like my own logic.
No, seriously. Many times people will tell us, or even the vet will tell us our dog is sick or has a problem. Sometimes it will be the opposite, they tell us the dogs are healthy when we, the owner, the kisser, the poop inspector, know there's something wrong. IF your gut feeling is followed by a solid test results, great. He's most likely not sick then. There's something to be said about motherly (or fatherly) instincts.
You should see the amount of Lulu's pee. Holy cow. Smells to high heaven too, when Mocha's are quite odorless. No idea what's going on there. Both drink boiled water, both eat same thing. My late daschund's pee actually eroded the gravel in our driveway. Also NO idea what went on there.