I feel extremely unwell in the early morning at about 5.30 when in bed. There is a degree of fluttery heart beat but I am in no pain. On rising, I feel faint and light headed for a couple of hours. I am 67 years old, male. Weight 15stone,height 5ft 10 inches.Only significant medical history is that I have had an ileostomy for about 17 years. After operations for this, I have developed low blood pressure and been anaemic.At present, I do not think  either of these conditions apply but I do tire easily at times.
Fluttering heart with dizziness may be a sign of Atrial fibrillation or simply paroxysmal supraventricular tachycardia. Anemia is also a cause of feeling of fluttery heart and uneasiness. Morning giddiness on standing from lying indicate or tho static hypotension may be related with anemia or a feature of autonomic dysfunction. Better is to consult a cardiologist get an ECG Echo done along with 24hs holder monitoring.