To begin with,there are youth here,It is fine that you are 17 to be on this site.

There are several mental disorders which can create the issues you experience,as well as nutritional causes.There are also physiological causes.No one here can/should attempt to diagnose you.Aside from which,if they are not correct,then you have the added worry for reasons that don't exist.

You say that your parents do not want you medicated.Well,choosing medication is a means of coping which I would think you should research.There are drawbacks with it.Like with not taking it regularly,mixing it with something else,the level of meeds being too high or low,and for you,being young,there are possibilities of interference with development.However,you have rights,But keep in mind that they are concerned,and want the best for you,correct me if I am wrong.
I have no idea where you live,so it is difficult to give you phone numbers that you can call to ask questions.But I found some toll free #'s

Try this below first,I am hoping the link works.It opens a google page with helps aimed at Teens.

https://www.google.com/search?ix=sea...bih=793&ix=sea

Or check out
Covenant House
or NineLine

I hope that helps.Take care ok?