Lower back hurts and swollen feet ankles and calves and can't walk far?

2 separate problems: I can't think of 1 disease that would cause both problems. The swelling sounds more ominous - it can be due to kidney, heart or liver disease and needs investigation.

Need to see doctor: You need to find out why you are getting swollen lower extremities. The back pain may give a clue as to where to look, but there may be other reasons as well. You must see a physician. Goodluck.