You WILL be alright Shady. I've just left an abusive marriage of three years which made me so ill. He made me think that everything was my fault. I am now starting to get my head around things and so will you. He isn't worth your tears or your emotional pain.
Do yourself a big favour - turn off the sad song on the radio, plan an evening of pyjama indulgence (Archers and lemonade, nice food, hot water bottle and WHATEVER YOU WANT ON THE TELLY!!!!!!!!
If you don't feel like eating then don't force yourself. I've not eaten for a week really and I've lost nearly a stone (woo-hoo!!! Means I can fit into all my outfits again) Remember the reasons why you left him and don't pretend that he was anything other than the p!llock that you caught him out to be.