how many calries should i have in a day? im 17 nd i weigh 119 nd im 5'4

between 2,200-2,500 calories each day:) depending on the amount and type of exercises you do.

You're 17, and going through puberty. Why not you just eat until you're satisfied, do not worry about the calories and let your body finish growing to its potential first? If you do not nourish your body enough, you would disrupt your growing process. 

Just enjoy your teenage years... there's still years ahead of you when you can worry about calories and all the gritty stuff.