Hi I'm Having Some Coloration In My Feet.they Both Are

Hi I'm having some coloration in my feet.they both are turning a redish brown halfway up on the side.also I've been having sharp hot knife like pain in the middle of my back between shoulder blades when I'm forced to take a deep breath don't no if these systems are connected.ive been diagnosed with (osterolerus) approx 4-5 years ago but recently found most all my joints have it also diagnosed with 2 leaky valves any info would help have doctors appt on thurs morning thank you