I worked on my feet with my first till I was 38.5 weeks and then after, I just couldn't. But I was working eight hour shifts like 4-5 days a week, standing the entire time. I went batty the week between giving up work, and having him like a week later but do whatever you wanna do. I think you would get super bored! Where do you work? Can you get a work aid like a chair to sit down while working? I could have one where I worked but I had to move around a lot so it didn't even matter. Lol
Eta, with this pregnancy, I quit last week at like nine weeks but had nothing to do with physical problems. I actually quit, as in won't be returning, to spend time with my son before the baby comes and focus on my schooling.