I am sorry you are having a difficult time right now. I understand how challenging symptoms like this can be. :/
It is good that you made an appointment, so that you can get the answers you need, and relief from the worries you're currently having.
For now, work your coping skills...and remember that you are likely dealing with anxiety and/or a benign issue such as ear congestion/infection that can be easily treated.
Let us know how it goes at your appointment, and know we are here in support.
"Courage is not the abscence of fear, it is feeling afraid and doing it anyway!"
"Worrying does not empty tomorrow of its troubles...it empties today of its strength."
Corrie Ten Boom
Panic Syndrome recovery due to CBT