My job are being dicks

I am having extreme swelling and pain in my legs feet and hands... I cannot wear shoes or socks, they cut into me... Meanwhile I have a few weeks left till I deliver and so I asked to do work from home a few days a week until I deliver because I want to save my time off for after the baby comes... Also I have a lot to do but trying to make it all day at work is torture. I can easily do my job at home in my recliner with my feet up I just need a loaner laptop. For whatever reason my boss is being a bitch making excuses why she doesnt think i can, putting off asking upper management, and not offering any type of understanding or helpfulness in my situation. I don't understand it.