DO I HAVE ANY BRAIN DISEASE OR ITS NORMAL OR SOMETHING ELSE!?

I am 18 years old , nd i want to tell you that when i was 16 years i got an attack in which i was writing my exam nd suddenly i fainted nd the attack was just like mirgi attack my eye ball went up nd some liquid came out of my mouth nd my body was totally stiff .After that i have gone to all tests like MRI , EEG but all reports were normal but the main symptoms i have got were headache whenever i used to eat after that nd whenever my stomach is empty nd gas is dere , i was used to fell like acidic in my stomach ,full of gas in my stomach,not felling hungry,my heartbeast increased ,i have to take deep breathe while i sleep nd when i sleep the beats were so increased that i used to feel as if my heart will come out nd i wasnt able to sleep .whenever i am tensed or excited i used to feel my hearbeats are increased nd my hands use to shiver not shiver it just react like a stroke as we are holding a pen in our hand nd hitting its nib on the paper just like this the whole hand shivers nd this type of shivering mostly i used to feel when i write my exams nd during writing my exams suddenly for a second i just have felling like blackout or loss in memory for just seconds nd one more thing for controlinf this shivering i take a drug namely RIVOTRIL 0.5 MG which stops dis nd then i will able to write my exam so tell me what is dis drug about nd whats its function. i have loose a weight also nd eyesight has also decreased ,hairfall is also dere ,nd from ten days before i felt a burn type of sensation near my thigh bone just at the starting of my leg nd ending of my buts.my mensuration cycle is also irregular means i use to have periods constantly after 15 days means 2 times in month.now i am v tensed what type disease i am having or whats is the problem behind all dese symptoms please help me outttt........