My legs often feel extremely tight and swollen. my calves get so tight and hard, it appears I have no fat on my calves- you can t even pinch any fat. I feel like now my thighs are retaining water also. They also feel stiff. Then it goes away. It comes and goes. I sometimes feel when I eat unhealthy food it can get worse. I.literally can gain 5-7 lbs overnight. I am 47 and very active. Work.out about 5 days per week. Typically try to eat healthy , low sodium and only drink water. I must be retaining water but don t get the in dentation when I push on skin. It s just really hard and uncomfortable. I.thought it was a type of autoamune disease?? I need answers.