Edema? should I be concerned?

I guess this would be edema.I have had swelling in my lower legs that comes and goes for almost a year now.Seems the left lower leg swells more then the right.I am walking now 2 to 3 miles a day which does seem to help.On day I dont walk the swelling is right back again.My fingers also swell off and on but mostly during walking ,which I guess is normal.Today I have noticed the swelling in lower legs is almost gone but in the small area where I still have swelling in my lower left leg.....it aches.I have never had any pain with the swelling until now.
I am wondering if this in your opinion would be considered edema and if I should be really worried about this? I did have my doctors assistent check this out a few months ago and she said it didnt look too bad said my circulation seemed great and just keep an eye on it.........that was it! I am 31 years old and a mother of 5.I just recently ,about 2 months ago,started exercising again.I was really unmotivated for a bit over a year and overweight.I have lost alot of weight and almost at my ideal weight now......so again should I be real concerned about this? and if this isnt a serious worry what can I do to help with or rid of this off and on swelling?

thanks so much for any responces I am just worried :( Tweet