"I just got a Macbook pro 13 inch"
Hmmm... I just got a 1932 Ford... but it isn't new. Is this a new computer? If so, just restore, like this....
-- Restart while holding command and R keys for 45 seconds.
-- Choose Disk Utility.
-- Select the "Macintosh HD" at left.
-- Select the "First Aid" tab.
-- Click "Repair Disk".
-- If it finds any problem, repair again.
-- If no problems, quit Disk Utility.
-- Choose "Reinstall Mac OS X".
Lovely word, "just". Can mean a lot of things. Maybe you just got it a year ago. If so, where is your backup drive? You need a backup drive.