I Have Swollen Ankles And Feet That My Famil And

I have swollen ankles and feet that my famil and I just started noticing within the last month. The feet are a little sore if I stand for too long. My job has been mostly sedentary for long hours and there is a fair ammount of stress. I am 5' 8" and am over weight at 200 lbs. Otherwise I feel okay. I take low dose level thyroxin and baby asprin. I plan to set up an appointment with my Dr in another week but I am wondering if this is an issue that can be addressed through nutrition, or exercise or if I need to take a diuretic. If anything I need to continue to hydrate myself. What causes this type of situation?