long rant-sorry

I started the ketogenic diet about a month ago under my doctors request.  They say it will help my seizures, so i tried it.  I havent been strict about it, usually i eat way too many carbs over the 20g limit, because at school all the food they serve is high in carbs, and i cant bring me lunch because we have no good food at home.  Sure, i could eat salads and celery every day, but i dont want to do that.  I also cant eat sugar and salt based on a dna test, which removes even MORE food off my list.  My mom is usually my biggest supporter, but she always seems to forget about my diet and makes food i cant eat.  My dad yells at me when i get upset about not being able to eat what he made and then i end up crying.  Im always hungry now because my metabolism rose when i started having seizures again, and i cant eat that much food due to the strictness of this diet.  I have severe depression but im also an optimist who knows to just hold on and ride out the storm. Ive always thought i knew what i wanted to do in life, but ive recently been thinking of something else, but im afraid of telling my mom because im afraid she'll get offended that i dont want to do what she does.  Its almost my junior year so i need to figure out if i want to go to nursing school or not.  Im so overwhelmed and no one cares, i dont want to bother anyone, i feel like they'll think its not important.  Sometimes i just wish i would die but i know i could never do that to myself...

Update: my mom talked to me about everything, I have to start taking all these vitamins to get the enzymes I need, and they have to get a special oil for me that cost $75. They're gonna try to start eating better for my sake