weight loss single Mom

hey @all, my daughter and i have a all girl household together :) i find it very hard to loose all the Baby weight After her birth in February. I tried low carb and no Sweets. I probably lost some weight (not recognisable in clothes size) but i was always hungry *especially AT night time feedings and therefore in a bad mood. since i am alone with my girl i really want to make home a happy place not a place where mommy is all grumpy. any advise? Tipps? (oh and i am Outside every Day 1 to 3 hours walks, and attend a Fitness class for moms)