please i am scared help

so im hope and im 16 ... on tuesday i took a pill and i found out im allergic to it im not gonna say what it was because i dont think i should or aloud to but it was my first time ever taking something like a pain killer and it sucked because i broke out in hives and im on other meds for depression and anxiety and other things from my doctor and i took the pill and i found out there was interactions and like i didnt care but the interactions i could have died it said because the interaction was serotonin syndrom. i eventually told my dad i took it he was suprised but he dealt with it fine and i dont know i wanted to numb my pain and feel better i mean i self harm in many ways but i wanted to try this cuz i really didnt care anymore ... the principal and people like the adults found out at school and i hope i dont get suspended but many people dont know what will happen have any of you had some of this ever happen like i dont know what will happen i dont want to not be able to get into a good college because i want to be a good therapist im kind of scared .... what will happen??? please help????