I had covid infection 5 months back I feel less strength in my legs . although I can climb stairs , walk but when I sit for long time and stand and walk my left knee bend backwards more but after second or two it becomes ok .. comparatively my left leg feel more weaker i also have excess gas and acidity problem after covid I also feel general weakness in my body also .my
b12 , vit d ,
calcium is at normal level . I am very scared please suggest me what should I do ..is it any nutrition deficiency ..is it just muscle weakness or something ... waiting for your reply