in short.... NO! Of course you're not a horrible person!
The body goes through some incredible changes in pregnancy, and not all of them are designed to be comfy for mum! I dont think we were ever meant to love it! Your body has been taken over and turned into an incubator for a baby who's job it is to get as big as possible and take up as much of your body as possible, nerves and blood vessels just get in the way!

I dont know if a pregnancy-specialist physiotherapist can help you at all? But do whatever you need to do- do you need to be working or can you take it super easy? Get someone to be waiting on you- you cant expect much else of your body other than being what it needs to be for your bubba. Be kind to yourself and no feeling bad allowed- you're allowed to feel however you want!!