Kids are one of those major issues you cannot/should not compromise on. It's good that you understand yourself enough to realize you do not want children.
Sorry you're going through a rough time but pamper yourself for a little bit (with non-food stuff). The better you feed yourself, the healthier you'll be and you'll move on so much faster. The bad food just feeds a cycle of depression, self loathing, and doubt, at least for me.
Hope things smooth out soon.