I occasionally get into a state where I feel hungry but the thought of eating almost any food, including foods I usually like, is disgusting. I end up eating something really bland, like raw tofu.
Also, I didn’t have any cravings after I became a vegetarian. I was never seriously tempted to eat meat. However, I did eat a lot of cheese and now that I eat very little if it, I want cheese all the time. I’m not even hungry right now and I’m still salivating because I’m thinking about cheese.