Make an appt with a Cardiologist:
Buy a b/p machine, take your blood pressure and pulse as follows:
1)Upon awakening while still lying down
2)Sit up wait 3 minutes and take again
3)Stand up wait 3 minutes and take again
Do this every day up until your appt te with Cardiogist, take the readings with you. This will help the Dr a great deal in determining whats going on