Hi Kim, look at your octave key, it is probably stuck in the open position.
This can happen once in a while because the rod gets caught and won't allow the pad to close.
I wish it was so easy but I looked at the octave key several times. I can also see that physical it change correctly. I should also add that the high "B" is nearly impossible to get a sound from.
I really hope you can help because, I can't practice before this trouble have been solved.
If it is opening correctly and you are also having difficulty playing the high B then it sounds like one of those high note pads is leaking. You should take it to a sax repair shop, it could be just one tiny pad ,making a lot of trouble for you and a pad change is not an expensive job.