Swollen feet and calves

Rossi

I am going to call my OB in the morning but... tonight I went to dinner with friends. We were sitting for about 3 hours eating and talking. I went to the bathroom 3 times. By the 3rd time my feet were so swollen it hurt to walk. I am only 23 weeks and this never happened with my first pregnancy. Should I be worried, or is it normal?