I'm 36 weeks will be 37 on friday and finally off work. I sit at a desk all day it is very uncomfortable. The best thing I can suggest is put your feet up on your breaks, that helped. Otherwise taking a short walk around the building once an hour ("bathroom break") also helps.
Thank you i will definitely take a pillow with me to work!!
I sit down at a desk all day. And I had the same problem. I'm actually just about as far along as you are also! But I have found that back support to sit up about bit straighter has helped a lot! I also try and move around as much as I can. So try just a small pillow or something behind your lower back. See if it helps!