I cant hold it in anymore

I've stacked up my sad moments and let them out in tear, but now my parents think i'm crying over the smallest thing I've bashed my head on the wall, almost breaking my hand taking out my anger, but I'm still stuck in tears I don't know what to do, I know hurting myself is stupid but that's all I can do I'm always strong on the out side so I just cry to people, I'm scared of being hated I also don't want my parent's comfort Can anyone relate please?