hello and welcome to HCM,
At the offset let me assure you that what you are feeling is due to a condition called the benign positional paroxysmal
vertigo or BPPV which is one of the most common and benign causes of vertigo.
In this condition, there are small stones or rocks as you called it which are called the otoliths which gets disturbed from their place and migrate to another place and cause the giddiness.
Although it sounds very complicated, it's a very common cause of giddiness and in most cases it is a self limiting condition.
All you need to do is wait for the stones to either dissolve or get back to it's original place.
The treatment involves the use of medication and certain guidelines which you must follow. You may consider these:
1. If your symptoms are not fully controlled then you can add another anti vertigo tablet with cinnarazine 75 mg in the noon. To make sure that it does not clash with your
betahistine medication, you can take betahistine in dose of 24mg twice. Your doctor will know about these
2. You need to take betahistine 24 mg twice or 48 mg once or 16 mg thrice for another minimum two weeks in consultation with your doctor.
3. During this time which can last for around two weeks to a month, you need to do everything very slowly and avoid sudden moments and bending down or looking suddenly up. When you get up or look up or down, you must do it very very slowly and gradually. Basically you must avoid any sudden movement.
4.While climbing stairs always hold the side railing..
If it persists then you need to do consult an ENT and he may suggest an exercise called the epleys which you can easily google and if you need the steps i can help you with that.
Meanwhile do not strain and do not worry.
Hope All your doubts are clear, i would be more than happy answer any more
Regards
Dr Sriram Nathan