Hate the way I look

4 years ago I weighed 55 kg. I had long hair and looked beautiful to myself. I started to gain more and more weight even when I tried my best not to. When I was pregnant I got to 84 kg. I am now a3 months pp and weigh 67.9, I had to cut my hair due to haed lice and I see myself as ugly. I hate the short hair and I hate the rolls I hide under clothes that are too big. I hate that I am no longer the girl my husband fell in love with. And most of all, I hate that I keep on losing motivation everytime I start to exercise. I do have an exercise routine and I am doing intermittent fasting but I'm afraid once I go back to work in 3 weeks I won't have time for exercising anymore, I work from 6 in the morning till 7 at night. I want to get another job but unfortunately they don't just fall out of the sky. I just need something positive.