Welcome to HCM.
All reports are normal and still symptoms is there,than it looks to vertigo
due to imbalance in vestibuler system.It is called Meniere's diseas is a disorder of the inner ear
Oral Betahistidine 8 mg. will be helpful.
Eat good nutritious high fiber diet. Isabgool will be helpful to relieve constipation
Avoid late night study,take proper sleep.
Keep in touch with your doctor.