Hi ShayKoren & welcome to PokerStrategy,
It is a strict rule that members of this site are 18 years or older due to legal restrictions which PokerStrategy take very seriously. This would have been clearly stated in the terms and conditions that you agreed to. This said however I would suggest that you send your ID to our support team with a covering note explaining your birthday etc. Hopefully they will be able to set up your account on or after your 18th as it usually takes a few days to be set up fully anyway.
Wishing you every success and enjoyment in your poker and oh by the way... Happy birthday 
Best regards,
Bart