US Postal Service Rca interview questions

I had applied online mid December, took the assessment and scored high enough to be considered for the job. I received an email inviting me to an interview and a day after I got that email I got two more to schedule a drug test and get a background check done, I did both right away so they would be on file for when I had my interview. Went to the interview, I feel like it went great. the interviewer said all my paperwork looked good and to keep an eye out for an email. It has been a week since my interview. I keep checking the status of my application online, it still says hiring list and I have yet to receive an email. I am kind of nervous, I know that an RCA position is just picking up when a regular needs a day off or has a scheduled day off but its a foot in the door and that's all I need!