Help/ Advice needed

something keeps happening and it is really starting to scare me....

so if anyone has this or had it peace tell me.

so lets start with the rand.

as some know I kanda get dizzy/ faint a lot 

it started like a year ago, when i would just get dizzy not being to see or hear anything much for a few sec.

it didnt scare me or what so ever but yea.

then in summer i got up opened the window and opened the door and suddenly i got dizzy, but it didnt go over and before i even knew what happened to me i was sitting on the floor.... apparently i had fainted and was out for a little while... and lets say sliding down a door is painful.... but yea it scared me but i didnt think much of it because it could have been because i hadnt had anything to eat yet.

but then a few weeks later i had the same but i ended up sliding down a wall.... which was made out of hard and rough stone.... sooo yea. then in winter or what so ever i had non of the small dizzy things or what ever so i though it was over.

but this summer it has been on its worsted.... and it is really starting to scare me, in one day i had these dizzy thingies like 20 times.... at the middle of the day and i did eat and drink enough, also it was really hot. but even on cold days i seemed to get them.... now last week i almost fainted again... i was opening my door and suddenly i got dizzy, i managed to keep staying but it really made me feel sick.... 

and just like a hour ago.... i really fainted again... and it really scared me because i was closing my window and i felt the dizzy ness so i tried to walk to my bed but before i knew it i was siting on the floor and my mom was yelling under at the stairs asking what happened..... when i said i fainted she rushed upstairs and i kinda got a panic attack because i really didnt remember what happened..... sooo yea.... 

maybe i should go see a doctor? or maybe its just because i get up to fast?

i really dont know and it is really scaring me.... so please help? 

i guess i should go sleep now.... since my first day of school starts tomorrow...... OAO