I don't know

Hi, i don't know what i am feeling anymore so if u know what could possibly be wrong with me, please tell me.

I just know that i'm sad, i'm so sad and worried all the time. My back, my neck and my shoulders, they hurt a lot but my head it's just another level. It hurts all day, at different levels but all day. Pills don't help anymore. I don't want to leave bed anymore, i know i should care about my studies and i do care but i just can't get out of bed. I want to sleep all day. I'm also mad bc nothing that bad has happened to me for me to be as I am right now. And it bothers me bc I know I am so lucky for the life that I have and that a lot of people would die to have a family to love and a comfortable bed to sleep in like I do. I have no reasons to be sad and worried but i just am and I hate it. I also can't talk to my friends about it, they're going through some things too and i don't want to bother them with my inexistent problems.

I don't know what to do and i want to stop feeling like this.