Weight after my pregnancy

My daughter came in April, just as stubborn as her father. She was 9wks an 3 days early. I was depressed she was coming home to a broken house. I was living with my mom trying to get back on my feet, still working nights. We were getting ready for a consolidation at work. I went back to work after my daughter had only been home 2 weeks. She spent the first 5 weeks and 3 days in the NICU as she was so premature, luckily there were no complications once she was born! I was so scared - I ate even more! After I had her, I had lost 11 pounds - still on nights, consolidation 2 weeks away going to 12 hour shifts. I needed a place of my own had to get out of my mom's house - 2 families under one roof - a horrible idea. I found an apartment on the other side of town 20 minutes from mom's house. I thought cool, the baby is here she is healthy- have my own place - I can start getting back in shape and shredding some pounds. I found a walking buddy that lasted almost three months the weather turned cold - she found a new boyfriend - and I hated walking alone. I dropped to 180lbs while walking daily. Consolidation happened my frequent 16 hour work days now turned in to regular 12 hour shifts - I'm still a single mom, 12 hours I had to do something find daycare, ask her father to become more involved - I was regretting it all.