am suffering from headache,dizzyness

when i was 16 i used to have avil tablets(5pills) for every 3 months due to disputes between my and my boyfriend...aftr havng them i used 2 gt drowsyness..very soon after diz i was attacked to headache...after a yr i suffered frm deodenum problem,skin allergy...bt am still suffering from headache..all other prob are cured except head ache....a yr bak i had eeg test..the report said that small prob in brain...i dint used medicine nor consultd doctr aftrthat...bt in recent times am gtng giddyness,headache aftr head bathe..feels lyk sum 1 is pulling my nerves...suddenly i feel black in front of eyes....can i know whats my prob?is this due to avil tablets?now am 20+