I work in a psych ward for teenagers and your story is a familiar one to me. We get many teens who did something impulsive that would either cause harm to themselves or others, and then end up in the hospital. They usually stay for a few days or a week or two--whatever they need to stabilize and be safe. There are many who explain they are not suicidal and that their impulsive behavior was a one time thing. For some this is very true, for others, not at all. So the patients stay for a little while so we can get to know them, judge their risk to themselves and others, see if they have a psychiatric disorder, get them started on therapy and meds (if need be), etc. On their birthdays, we always have a cake, ice cream, and a little celebration. It sucks to be in the hospital on your birthday. I hope next year at this time you will be in better health and spirits. Are you able to have a post-hospital birthday celebration with friends and family? Good luck.