If someone who's a nurse or a doctor or someone who knows about helath a lot , then please help?

i came to US 2 years ago and im 14 years old. 2 years ago i was totally fine and my grandma always used to go for check up with all the time so i know i was healthy. but im someone who has a lot in my mind and worries about everything i hear. but about a year ago i started going to bed late and i started going number 2 only 1 a week or something but i was totally okay with it and i used to go to bed at1 and get up at 6AM and i wasnt that tired at all. but now im getting lot of bad feelings. i cant go number 2 at all i need to force it so badly that i started getting red small dots on my face(i think its because of forcing it so bad because before i went to the bathroom there was nothing ong my face but after forcing a lot there was like a mountain of it on my face when i got out of the bathroom) i went to a skin doctor but they said it was the sun. but i even have it on my leg and arms and my body everywhere. and sometimes my stomach hurts so badly but idont tell my parents because they say theyll take me for a check up but theyre too busy. now i go to bed at 12 nd get up at 8 but im still so tired at the end of the week. i have dark circles under my eye. and i feel bad. and i used to drink water all the time but in the last month i dont drink anything after i wake up to when i go to bed. i drink a little more than half a bottle when i go to bed. and i eat lots of fruits. hate vegetables. is it bad?