Brief vibrating and spinning sensations along with a heavy, imbalanced feeling when you stand often point to an inner-ear (vestibular) problem, such as benign positional vertigo, rather than stress alone. Partial relief from your doctor's medicine but ongoing heaviness and imbalance after five days means it needs a closer look, not just symptom control.
Next Steps
Get your blood pressure and blood
sugar checked, since swings in either can cause similar imbalance. Ask your doctor about seeing an ENT for a vestibular assessment if things aren't settling, since guided head-position exercises often help with positional vertigo.
Health Tips
See a doctor the same day if you get slurred speech, one-sided weakness, double vision, or a sudden severe headache.