I’m really sorry hun. You sound like you are going through alot of emotional pain and a broken heart. PsychicD has given some pretty good advice. He has wisdom beyond his years!
Is there some things you really enjoy doing? How would you feel about going out and doing those things? Maybe there is a hobby that brings you great satisfaction that you could do as well. You really have to look after yourself. Rediscover yourself again. Take one day at a time. Also relying on your spiritual beliefs or your higher power is a huge help.