Talk to Orthopedic Surgeon on Knee/leg Pain

My knee pain is worsening day by day and I can’t even walk properly often. Mostly after bending my leg (right knee). I used to feel this pain in pregnancy and now my baby is 8.5 months old. I don’t take any medication ( took Cal-K a couple of times). Pain occurs in the back part of thigh and calf area mostly and in constant work mode also travels to right arm. What should I do I’m getting depressed now bcos of it