Back Support for Office Chair

Hello!

I am currently 13 weeks pregnant and I work full-time from home. My back is already starting to hurt from being in my office chair for so many hours in a row. I’m rotating between sitting & standing, but I’m still getting sore by the end of my work day 😭 I was wondering if anyone had any suggestions on a specific support pillow I can get for my chair that will help? I was looking on Amazon, but feeling overwhelmed by all of the choices! Thanks so much in advance 😊