I agree with the other girls and it could just be the heat. I noticed mine swelled up with the heat and I am not on my feet all day either but didn't put them up like I sometimes do. If you can try and bring in one of those feet seat thingys and put your feet up under your desk and when you get home too.

Also I would suggest telling your Dr/OB when you go and see them next.

Good luck and I hope your ankles don't swell up again.