Craving food that's bad for you

Bridget • Married to a wonderful man and proud mother to a 3 yr old boy! BFP 11/30/14!
I'm shy of 7 weeks and my appetite has gone downhill very quickly. All I want to do is eat a whole box of Oreos or eat deli meat. I have been craving Jimmy John's like no other! Nothing else sounds good! Am I the only one?