I feel like my world is ending i dont know how to manage anymore?

last summer i had major panic attacks that lead me to a two week stay in the hospital. It was really really bad, they thought i had a heart condition from all the jumps and arrythmias and that was a problem because I already have long QT syndrome. When i was little I had leukemia but i survived that and ever since ive been pretty okay but then last summer everything changed. So for about two months straight i lyed on my couch, didnt talk or go out and i couldnt goto school because i was too dizzy to even SIT UP let alone stand and walk around. I couldnt talk because I had no breath and I felt literally like I was dying. They put me on floxetine and it only made it worst and now i have memory problems from that. anyways about 3 months into my anxiety it started to ease, i was not on any meds at that point so basically the whole fall/winter/spring was just basically controllable anxiety, a symptom here and there and i handled it but now its back again but worst. for the last 4 days ive been lying on my couch sleeping. I had to skip my last exam because i couldnt sit up. Im breaking out, and always exhausted. all my friends havent hung with me in about two weeks but they dont even understand what anxiety is actually like. All this is going on and I cant do anything. im lying down on my laptop now i will do anything for a cure. ANYTHING honestly. i dont smoke or do anything but the only thing that has helped my anxiety is alcohol. im so stuck im the one that tells people "to cherish their life because you only have one and people would kill to live yours" but to be honest, i dont even want to be in mine if its going to be like this forever.