Best at-work support cushion for hips?

Hey mamas! My first pregnancy my son just pulverized my pelvis; I couldn’t sit or lie in the same position when I was pregnant with him for more than an hour before feeling pain and numbness in my hip joints. Now I’m 20 weeks with my second and am starting to get the numb/tingling/achy hips. I have a decent office chair at work, but I think I need more cushion, as that’s the only thing that helped last time. I also have a standup desk but i still have “morning” (hah) sickness and if I stand up for too long I start to dry heave.

Any suggestions on office chair compatible but supports for preggos at work? Favorite brand?