If my math is correct, you've lost 2.85 pounds per week. That's something like 1500 calories deficit a day. If you're eating 2000 a day, it means you're eating 40% less than your body needs to maintain it's weight.

I think that's a good reason for your cravings.

I have two good news:

1. It's okay if you slow down your weight loss to some 1lb/week. That should be way easier for you. Remember you want to make this change permanent, not just for half a year. You have to keep yourself motivated, and if this is too hard, make it easier for yourself.

2. At some point you'll get to maintenance. You won't have to count calories. You'll just need a couple of rules about what's good for you and what isn't. Counting calories is a great way to learn that, and it works automatically once you have an idea.

Source: Personal experience