Not being able to eat

I’m 22 weeks now and up until the last few days I haven’t had too many problems with eating or being nauseous, though I did find I was a bit pickier than before I got pregnant. Now, I find nothing at all sounds appetizing, and it wouldn’t be a problem if I didn’t literally gag at the thought of almost all foods. I don’t know what to do, I need to eat but it all makes me sick. Has anyone else experienced this? Did anything help? Thank you so much!!