Does Hypothyroidism Cause Swelling And Heaviness In Feet?

Hi Doctor, I am a 57 year old female, 115 pounds, very active, Is it a concern that as soon as I get up from laying down even for very short periods of time, it is painful to walk on my feet. They feel swollen or something. Everything else is fine. I can swim the length of a pool several times in a swim and excercise frequently during the day. I have had hypothyroidism in the past but have not needed medication when I last saw my doctor. Should I get that checked again...I will anyway...but do you think that s what could be causing it. I just made a huge move across the country too. My budget is pretty drained.