Bounce to disk whole tone higher than recorded

So I've been recording using an Mbox 3 in Pro Tools 11. The issue is when I bounce to disk, the audio sound a whole tone higher than recorded (and a little out of tune).:( Even before bouncing to disk, when I have my Mbox disconnected and I'm using the ASIO driver as an engine, the audio sounds a whole tone higher. However, it sounds correct when I'm listening to the recording in Pro Tools with my headphones plugged into my Mbox. If I import the the bounced audio file into Pro Tools, it has the same properties as I said before. It doesn't matter if I'm recording in a 44.1 Khz or 48 Khz session, it still has the same problem. How do you think I can get pro tools to bounce to disk properly? I am working on the soundtracks for some short videos and would appreciate a helpful response!:-)