Swelling in calf and ankle?

Cara • Expecting our first baby Jan 1st 2016! Married my best friend after 8 years together 10/10/14.
I'm 32 weeks and as of yesterday my calves and back of my feet are swelling pretty bad. I noticed yesterday that I had a bruised feeling on the back of my left ankle and when I looked all around my foot was swollen. Today I came home from work and while changing I realized my calf and that same foot were really large and swollen. Is this normal?