Swollen ankles?!

Meghan • Mama to Landon and Donovan, baby GIRL is on the way!
So the last 3 days my ankles have been so swollen. It's really just my right ankle, and at night. When I put my feet up and drink water it tends to go down, but my questions is. Isn't it too early for this? I'm only 16 weeks 5 days. Going to the doctor today, but wondering if anyone else has had this happen and everything was fine? I'm so nervous.