Muscles on left body are thinning. Help!

Hello, Namaste! For last few months , I started to feel as if my left cheek drooped, and my left is inside deep where as right is forward. Physically it's looking normal but I feel as if left eye is inside and right is outside bigger. I am feeling right cheek,right jaw joint as well bigger. When I sit I feel my left chest is hallow and deep inside where as right is big and thick. Even while walking I am feeling left is small and thin where as right is thick and big. I am not getting if my left body muscles are becoming thin or right has become big. While walking I feel all my right joints are above left joints. Even while swallowing saliva , I feel I am swallowing it only from my left.When I walk for 10 mins I get lower back pain and some clocking sounds. Could you please suggest something.This happened during work from home time. Could you please help