Every Day I Feel So Useless And Unwanted. I Have

Every day I feel so useless and unwanted. I have trouble eating because food just doesn't sound good any more. I don't get excited over things that would normally excite me. Someone I love said that I don't even love them and I'm just insane. I feel tired and worn out all the time but I can rarely fall asleep. If I do manage to fall asleep, I am only asleep for a few hours.