swelling!

cassie

is anyone else's feet swelling...this is baby number 3, my youngest will be 11 months old on Wed....with both my previous pregnancies I've never experienced my feet swell...but we took a 4 hour car trip to drop our oldest when we took a pit stop 3 hrs in I noticed my feet looked like balloons..wth?! should I call my ON on Monday? 21 weeks today