hi there, these frequent reeling sensation is not a good sign and you need to visit a doctor to check out the cause for the same. Get a thorough medical exam and blood workup done to get to the cause of the condition. It can range from anything as simple as anemia
to some thing as serious as brain tumor
and so you should not assume that it is due to low BP
. Get a diagnosis on your condition and then get it treated. Take care.