Hello there.  I can understand your concern.  You need to get it checked out. Masic things like blood pressure and blood sugar levels would be required and if they come normal, a detailed evaluation would be necessary to find out the cause of this. Drink plwnty of water and tab. Neurobion forte once a day after food for for a month. Consult a general physician in person for further evaluation and management.  Best regards. Dr. Anil kumar jain. Bangalore.