I'm 15, almost 16 years old, around 2-3 months ago i suffered a headache at school (i rarely get headaches) and had never suffered one of this severity it was also just one half of my head, i also lost my vision for about 15 minutes, by lost my vision i mean my vision was significantly i couldn't focus anything and there was a half moon shape in the middle of my vision, i got taken straight to the doctors and the doctor said it was simply a migrain, however the headache returned the following day and my parents took me to the ER, to be honest, they made me feel like an idiot and that i had nothing to worry about so they sent me home, the symptoms went away and i dismissed it, about 1 month ago, i was in class and put my head down on the desk, when i sat back up i couldn't focus anything, it was disturbing and freaked me out, objects on the desk where i was sitting were simply blurrs and so was the teacher at the front of the class this subsided after about 15 minutes again. between now and then i have had a few mornings where i have woke up with headaches, it's so strange, my right eye also feels sensitive and tender, and slightly painful when rubbed or when i look in certain directions, and this is going to sound idiotic but i feel there may be a very slight pressure at the back of it, i am really very very very scarred, can someone please offer some advice?