Is it normal that my food craving is affecting my life?

It's been about a week and a half since I've been wanting to eat pizza but I don't have money to buy it, that's a normal situation I guess, but the scary part is that this is affecting my life. I'm stressed, I can't focus, I can't sleep properly. I'm only thinking about pizza and I've even considered stealing money or borrowing from the bank (which I can't since I'm already in debt). It's just pizza, it shouldn't be such a big deal, but the more I can't fulfill my craving, the more obsessed I become.