Hey Redjewel22,
From what it sounds like, you sent yourself a gift, and you're encountering issues redeeming said gift? If that sounds right, first I would run through the steps in here to make sure the redemption process is going smoothly:
Redeeming iTunes Gift Cards and content codes
http://support.apple.com/kb/HT1574
If you didn't receive the email to redeem, you can also try to resend the gift:
Resend iTunes Gifts
http://support.apple.com/kb/HT1541
If none of that works, run through the steps in here:
If you can't redeem your iTunes Gift Card or code
http://support.apple.com/kb/HT6021
Welcome to Apple Support Communities!
Have a good one,
Delgadoh