depending upon how easily it is for you to talk to your parents about this ,you could do this a couple of different ways. do you have a trusted adult in your life,if you yourself cannot do that? sometimes talking to someone like an aunt/uncle,older sibling or a teacher at school will help dictate what to do or how to approach this. but if you do have a good relationship with them or at least one of them,just tell them that you simply dont"feel" right in your head,that something is kind of off and you really need to see your family doc for just a talk about the feelings you are having. but "someone' needs to know that you are feeling this way so you can get some help with this.
in my sons case,i actually realized that he was suffering from depression before he did,only because i suffered with it myself before. but you do need to trust someone(adult,preferably a parent) with what you are feeling,so your situation can just be evaluated and possibly treated by a professional that your doc can refer you to. but please say something. it may not always seem like it in what parents do and say,but they DO love you and want to know if something isn't right in your world. once you open up and tell someone you trust,i can guarentee you that weight you have been carrying around on your shoulders,just by telling someone else,will be wayyy lessened than it is right now.
i am wondering what you feel is unstable,whats happening there in your head katie? what types of thoughts are you having or been having that leads you to feel you are actually unstable? just have that talk with hopefully one of your parents,K? please keep us posted on how things are going for you. good luck hon, FB