Sore Knees When Driving Sore Knee. Too Much Stress?

Sore Knee. Too much stress? - sore knees when driving

I started a very physical delivery of milk in 63 weeks, when we drive a van. Salgo and van about 200 times per day without interruption, and climbing stairs for houses approximately 150 times per day, 6 days a week.
Think ive got tired calves and my right knee and I will end, it is fair to ask for peace. I quit my job and can hardly stand after 2 weeks on the job market. My colleagues told me that it would expire after 3 weeks, but I was not convinced that there is certainly a good thing for me. So I made the right choice by making a big week on a possible wreck my knee?

I note that two of my colleagues wear knee braces and a couple of lame.

Ive boots steel because the amount of padding they use on the ground when should prolly running shoes.