Hi friend,
Welcome to Health Care Magic
It is very likely from the medicines.
Postural hypotension is most likely – check the BP lying and standing...
Need to check electrolytes – especially potassium.
Do not stop a medicine by yourself.
You may need a different medicine or reduction of the dose.
See your doctor.
If there are no pointers, you should see Ear Nose Throat (ENT) doctor.
The balancing mechanism is in the ear...
Take care
Wishing speedy recovery
God bless
Good luck