Feeling Overwhelmed and Need Advice on Dealing with Heartbreak

hey guys I literally feel like I am in crisis mode and I am so unbearably anxious all the time, the last time I felt so anxious and upset was when I was in a literal life or death situation. I am not necessarily going through a triggering event, it is my first real heartbreak. my therapist is saying that this is one of the worst emotional things that I have been through (that wasn't also life or death) and I don't know what to do. I feel like there is nothing I can do and I am getting to a point where I feel like I can't go to school I can't sleep I can't eat I can't shower or take care of myself properly and when I get in a state like that I typically need to be stabilized inpatient. but my therapist and I agreed that I cannot check myself/get checked into a psych ward either so I truly have no clue what to do. anyone have any advice?