Who knows? Is this normal or am I nuts?

I know life sucks for everyone at times but everything is going wrong at once for me. im not saying there arent people worse off then me cause there are but I think im getting close to them. im so stressed lately and so is my family cause of me. I was really sick for a while and out of school so because I was absent I got behind and my grades went down. Then because I would have to be at the hospital in the morning I was tardy for school 6 times meaning I get an office detetion. And im the good two shoes student council member who never gets in trouble at school. I broke down crying the school bathroom. Now because of the grades the tardys and the detention im probebly not going to get accepted into the private high school I wanted to go to next year. My parents and I are fighting constently because of everthing going on with the hospital and school and the hospital is causing so much money even with the enchurents and now my parents are arguing with eachother too. Everthing is so screwed up because of me. I’ve even been having suicidle thoughts! this is scaring me and I want it all over and gone. Im trying hard to get back on track and my grades are starting to get better but the other stuff I cant control!!! I dont know what to do!!! someone help before I snap!!! I’ve been SERIOUSLY considering suicide but I wanna stop but it seems like the only answer please help !!! am I nuts or what ??? SOMEONE PLEASE HELP !!!