Awena Awena

So I applied early action (Deadline: November 1st) for harvard and sent in my application on November 1st. It’s been ten days, and I still have not received an email for an interview. Meanwhile, a classmate of mine has his interview today. Should I be worried that I’m not going to get one? Do they usually send out interview emails right after receiving the application, or can it be a couple weeks after?