Does it really only happen when you drink?
Have you had a cold recently?
I have dizzy spells for a few weeks sometimes after a cold. It takes a while for my ears/sinuses to clear out. It can be a PITA. Sometimes its so bad I can't walk or drive.
Primary/Secondary: #99 Northern English Brown, #100 American Pale Ale
Kegged: #97 Raspberry Wheat, #98 Red IPA
Planned: American Brown Ale