Sad breakup

I broke up with my boyfriend of over 4 years on Sunday I think or Saturday I can't even remember. The days are going by so slow now. I've been laying in bed for three days. I have a broken foot so I'm already not wanting to be out as it is but this breakup has crippled me. I can't laugh, can't cry, can't go to school, don't want to breathe, just want to be alone in my bed and here I am. This is so horrible.. I didn't want it to end. I never thought it would get like this... But I had to end it. I don't even consider us broken up.. Just separated. It felt like we were married and I had to try to make it work for the sake of us and it just didn't. I found out I got a horrible grade on my exam and it was like a punch in the face. I instinctively went to call him and had to stop myself. I wanted to give in and ask for him back but I knew I couldn't. I'm going through a crisis right now... I'm just so sad