hey everyone, this is my first post here. I'm 17 M. last month on 5th May my grandmother passed away , this took a heavy toll on me i couldn't cry but i was shattered from inside. when I saw her wrapped in coffin that terrified me. i somehow attended the whole funeral ever since that day I'm getting weird thoughts and images of her wrapped in that coffin , her pale face. i sometimes think I'll die and I'm terrified. i don't want to die yet. whenever I remember her or someone talks about her my chest feels heavy and it feels hard to breath , chest starts paining. my sleep cycle is fucked. I'm insecure about my height and body too. but i have to keep it together. i haven't told anyone because i think my family wouldn't understand and I'll make a fool out of myself. even right now I'm feeling like it's hard to breath and i might die. what should I do? please help