How do they test for if your epileptic or enemic?

I think i might have one or both. Ever since i was little i've had seizers VERY often. my mom had me tested and they said they couldnt find anything wrong in my brain and didnt understand why i was having them. that was when i was about 5. then i stopped having them until about 2 years ago i started getting them again and theyre getting worse. im now 17. the first one i had since i was little was when i got my last shot to prevent cervical cancer. i just passed out, then again like a year later getting my lip pierced. about 3 times after that then i went to the doctors in january of this year and they were doing blood work, i had another seizure. most recently was about a week ago i went to the dentist. i had to stop her because i just randomly got hot and dizzy. all she was doing was a cleaning my teeth. she went to get my xrays and i fainted and fell out of the chair right on my forehead. still have a sore forehead and nose. when i woke up she asked me if i was enemic, i didnt even know what that was. but anyways this is already long. pretty much i wanna know if it sounds like i could have epilepsy or enemic? and how do they test for these things if i were to go get checked out? thanks for reading this long thing hope you can help.