You can't eat as in you get nauseated when you do or you have no oomph or motivation to eat?

I know I lost my appetite for a few weeks and had to force myself to eat even one meal a day, but after a month and a half my appetite kicked into high gear and I couldn't stop eating. Lol. Depending on what exactly you mean by you can't eat, I'd say it's completely normal. But if you're worried, contact your doctor :) No harm being safe