Hi,
Thanks for your question.
After going through your case there are following possibilities for your symptoms.
1) Cardiac arrhythmias: electrical disturbance in heart conduction.
2) TIA (
Transient Ischemic Attack): Transiently decreased blood supply to brain.
As you have two episodes of similar symptoms in last 6 months and there is family history of
heart disease and stroke you should not neglect these symptoms.
Consult your doctor immediately.
You should know other symptoms of heart disease like
chest pain, sweating,
palpitation, breathing difficulty and stroke like imbalance while walking, tingling or numbness on one side of body, visual or speech disturbances.
There may be need for
1) Clinical examination.'
2) To check postural drop in blood pressure.
3) ECG & 2DEcho of haart.
4) Electrophysiological study and Holter's monitoring.
5) Brain imaging like MRI of Brain with
angiography.
Hope this helps you, if so do vote.