Thanks for your query.
there are many causes of dizziness
which includes low BP, which you don't have. Your BP is bit low may be due to dehydration
,loss of blood may be due to ulcers, diverticulosis
etc, measuring your Hb level will be helpful.
dizziness may be due to problem in your ear, so advice you to consult ENT specialist
Yet again, I duly appreciate your query to me, I do hope that you have found something helpful and I will be glad to answer any further queries.