Hey, do you have anyone at your school (advisors, people in the Dean's office, etc) who have access to your application who you could express these worries to? It would definitely be worth it to double check, since by all odds you should have a ton more interviews by now.
It would also be worth it to write an email expressing interest to every school that has offered interviews that you are interested in (and that you applied to, obviously).
Good Luck!