Wow Welcome "another" Virginian! I really think it's our water or something!
The swelling is normal, but there are some things that cause swelling that are not. You need to look for any signs like Diet mentioned, and if so, you need to get seen by your doctor right away. You dont want a blood clot.
I had to have a doppler sonogram done on both of my legs twice in the first few weeks post op. I had a very negative reaction to the neurontin and the Lyrica both.
Did they use BMP on you, which in a bone growth protein and put into the disc space? If so, this is well known to cause swelling in the body including the feet and it varies per person as to how long it takes for this stuff to really get absorbed by the body. So this may be part of your issue as well.
The stockings are annoying as all get out and quite frankly impossible to get on by yourself at this stage, but they really can help control things better for you. And keep those legs elevated.. it's all to the good too.
Hang in there and keep us posted on how you are doing.