What is going on?

I’m not a chocolate lover. I’m not generally a sweets lover. Not in the least bit. It gives me a headache, leaves my stomach feeling icky, and wanting to just crawl into bed to sleep it off. But, for the last couple of weeks, I’ve had cravings I can’t explain. I’ve eaten several chocolate bars, and have had to satisfy mad cravings of pancakes with LOTS of syrup. I can’t explain it. What is going on?