No worries. I am in the same boat. I sent my resume and was invited for an interview via email. The recruiting contact told me to send her a day and she would try to set it up. That was on Wednesday and I haven't heard back. I am planning on calling next Tuesday if I don't hear anything back. From what I've heard about interviews, they have to deconflict several people's schedules and that can take some time. Congrats on the interview and I hope it goes well.