Don
Take Bob P and Wyllows advice, see an ENT speciallist ASAP and make sure you fight any infection in the ear.
I delayed going to my doc for a week, I had a mastoid infection which burst because I did not get antibiotics or diagnosis early enough.
Totally lost my balance for about a week 'till the "seasickness" pills took affect.
I totally lost the hearing in one ear which now has tinnitus.
The tinnitus seems to disappear if I am involved in singing or playing music. If you lose one ear music is good therapy although it is difficult to play along with anybody at your "Bad" side.
It also has the advantage of developping a large range of Mondegreens
which can be put to good use if you have a wicked sense of humour ie you can get away with mishearing things which were never said in the first place.
The bottom line is my opening sentence and the hope that you can recover the majority of the hearing you had before.
Best of luck
Kenny B