QUERY REGARDING HEADACHES. To worry but.

I am suffering from an unknown gastrointestinal illness from March 2017 till date. I have fainted with blackouts twice once in Dec 2017 and then in Jan 2018 . The doctor said that this is because of vasovagal faint and has nothing to do with neurology. But one doctor advised me to go for a MRI Brain to rule out my problems. An MRI was conducted in July 2018 whose report is attached below for your perusal please. I had minor headaches and doctor prescribed me flunarizine 10 mg once a day to consume on the day my headache occurred. But from past 1 month I am having mild headaches throughout my head and the mild pain remains and head feels heavy. The pain come and goes . The pain is not sharp but a dull and mild one but a persistent one as well. I have not problems in balancing myself and sleep comfortably but headache remains when I get and throughout the day. I also consulted a neurologist but looking at my past MRI reports of brain in 2018 he said that there is nothing to worry but...