Edema...already?!

23 weeks and 3 days, i worked a full 8 hour shift yesterday and due to my job i don't get much of a chance to really sit down often (studio photographer). So between the constant running around and bending/squatting my lower legs were pretty swollen when i got home from work, i quickly noticed pitting from water retention, which i did have with my first but not this early on! It isn't severe, but even after 24 hours and staying mostly off my feet today (as well as chugging water lol) it hasn't gone away. Am i just doomed to be swollen now, or will it go down? Is this something i should be worried about?