Extreme hunger

I am not pregnant, (I do know for certain) but the last couple weeks I've been consistently waking up in the morning positively sick with hunger. He kind that feels like I'm going to throw up if I don't eat anything NOW!! I get super weak and my throat hurts because it feels like I need food so bad.

I feel like I haven't eaten in 3 days. It's sudden and only happens in the morning whenI wake up. I am nursing, I have been for 10 months, but this just started about a month and a half ago.

Can anyone shed any light on my issue?