Hi. Thanks for your query. Noted the history of stomach ache in the morning, on waking up so rushed to the toilet, sat in the toilet but got heaviness in the head, red sparkles in eyes, fainting, breathing hard, all for about 5-6 minutes, wants to know the cause: This can either start due to syncopal attack that is vaso-vagal overtone. OR can be momentary increase or increase in blood pressure. I would advise you the following in such a situation. Consult your Doctor or at ER immediately and get the following things: Clinical evaluation, examination to see the vitals and general exams. Ophthalmologist;s opinion and examination to see if any problem with blood vessels in the eyes. Take care and do not be late. Investigations as advised by your Doctor.