Whats wrong with me? should i go to the doctors?

Over the past month my body has started acting really differently. It started with me feeling really tired all of a sudden and not being able to sleep much at night. As well my stomachs been starting to hurt aswell...i thought of it as nothing, but this week its been hurting alott and now if i eat or drink anything i feel the urge to puke or it starts hurting alot! I also get random pains by my left lower rib..im 5'4 weigh about 118 and im 16 years old, im fit and do enjoy playing sports and stuff. But could it be the way i eat? or that i have a really busy lifestyle? My day usually consits of me waking up around 7:30 and i have to drop my little brother off by 8:30 when i start school at 9:00, so were usually out of the house by 8:20, and so i usually have a gl of milk in the morning. And if i have time ill usually have a piece of toast. After that i have 2 cles until 11:50, and then i have lunch. My lunches usually consist of a sandwich (normal sandwhich toppings), a juice box, a fibre bar, and a 2 serving fruit bar, and sometimes some garnola. After that i have another 2 cles until 3:30, and then i come home or go to work for a bit at my parents store and have a snack, or eat an early supper because i take night cles aswell. So i head off to night cl by 6:00 and come home around 10:00, by this time im veryy tired and usually have a tonn of homework so im usually up until 12 or 2, so i usually dont have supper. And then i wake up again at 7:30 and the whole day repeats itself. I also have a boyfriend that i have to maintain and friends to hang out with, but i jsut dont seem to have the time for myself anymore. Which is why i think all this stuff is starting to overwhelm me. Aswell with all my school stuff i also have tutoring that i go to sometimes in the mornings, i work out, i go to the temple sometimes. My parents expect me to do the best in school, and i have alott of strict rules that they apply to me. What do you think is wrong with me? and is it all this stuff thats affecting my health? do you think?