Sprint Iphone 5C just ordered, what's next?

Just ordered a iphone 5c from sprint. Got a couple conformation emails and an order number. When I put the order number in the sprint tracking bar, it says that the orders under credit review. I paid and everything. Can I get denied of credit and get my money refunded to me if I don't "pass" the credit check? I just turned 18 yesterday so i don't know what really happens. Someone help me please

I suppose that would be the case if that was to happen.