If your ears are really “rammed with wax” this is at the very least likely to be a contributing factor.
I’m prone to wax build up, and if they do get bad, I can feel dizzy and unbalanced, especially when I stand up suddenly. I have in the past been to the docs simply because of this, yet had no cause found and getting ear drops has relieved it.
Otex Ear Drops have been a good answer for me, I do mine every few months now, and very rarely have a problem. Can’t see how it would do any harm to try them immediately, softening the wax. You may possibly need your ears syringed, I did the first time, though I think they do this less often now as the drops are better. A few days of regular drops may well make a difference.
If it is a more serious vertigo issue, you have my sympathy, a friend has suffered this on and off and its clearly not pleasant.
Fingers crossed for a quick solution.