Pregnancy swelling or something more?

My job requires me to stand on my feet for hours, so I expected my ankles and feet to swell, but the swelling went down in both my ankles after I had a day off and time to relax and prop up my feet. However, on my right side, the top of my foot is still very puffy and hurts to touch it. It almost feels as if I dropped something heavy on it, but I haven't. I've soaked it in Epsom salt and have had my feet propped up and nothing seems to help. I haven't been wearing shoes that are tight on my feet or anything. Should I go to the doctor or is this normal in pregnancy? This is my second pregnancy, but with my first, I delivered early and didn't experience any of these symptoms.