Mine are huge. None of my shoes fit and socks leave a massive dent half way up my calves (nice!). Regularly checked to make sure BPs ok and no protein - if you've not been checked recently then I'd make this a priority. So long as its not a pre-eclampsia sign then it's just another fun pregnancy thing! I have found rubbing my stretch mark cream on my feet too does help with the stretch pain, but you can imagine how easy that is at 40+1!!
I found the stockings a great help, even just flight stockings from boots!! my legs don't swell up half as much and I can fit almost all my shoes with them!! it's not quite warm enough to be stuck in flip flops........
I had similar problem for the last 9 weeks before labour. One thing I tried was sleeping on my back with my feet up on cushions, raised above level of my head. If you do this keep the sessions no longer than 90 mins if possible (ie 1 adult sleep cycle) as the best position to sleep in is on your left side. I had to sleep like this for a while every night as swelling was up to top of thighs by 38 weeks, couldn't even reach my own knees. Went down quick after the birth though.
I'm a huge elephant legged person . It started just in my ankles and now its half way up my thighs and even down to my toes. My BP has been up although seems to be stable at the moment. I cant get any of my usual shoes or boots on, gave up on socks too as they're just too uncomfortable. Even if I wear slippers I get dents in my feet where the seams meet. When I go out I jam my fat feet into a pair of 2 sizes bigger ugg style boots. I have my ELCS in just over a week and I'm really hoping it will make them magically go back to normal overnight - haha wishful thinking!