Swelling at 24 weeks

I know some edema is possible in pregnancy. The last three days, including today, my hands feet and ankles have been swollen. I've had to loosen the laces on my shoes. My socks are cutting in. I wear a size 8 ring normally, but had to put my size 9. After 30 mins or so it's leaving a massive indentation. I've severely cut back on sodium due to some high bp a couple weeks back. I'm drinking a crap ton of water to flush my system. I'm also elevating. I'm thinking I should call Dr. Is there anything else I can do, or should I phone Dr tomorrow?