Help from the girls please?

I'm 14 and have no boobs I'm in tenth grade and started my period two years ago. I'm really skinny so I know that's a part of the reason but I also know that my mum and sister have small boobs too lol. I want to get boobs because I'm really flat, so I'm trying to gain weight- what do you suggest I eat? also I don't want to gain too much weight because I have a big butt and big shoulders so if I gain weight yes I'll get bigger boobs but my shoulders and butt will grow too do what exercises are there to loose my butt and what clothes can I wear to make my shoulders look small and my boobs big? im so insecure and unhappy, this is all i think about. i just want to know if a guy will like me in the future-thats all i worry about. i want to be HAPPY, is that too much to ask? most aspects of my life are going wrong, and thats not me being dramatic. i have trichotillomania, a disorder in whcih you subconsciously pull your hair out, meaning im losing my hair at the age of 14. my brother has autism and severe learning difficulties. i have terrible skin and a biggish nose. i dont look great in clothes because im so skinny. i have pigmented skin now because of a few breakouts. my family is falling apart. gcse's are driving me mad and stressing me out to the point of me crying. my best friends are beautifull and are full B/C cups and i feel so insignificant and ugly, because so many boys have liked them and i feel like the odd one out. PLEASE HELP ME