you have to get yourself back. if you have family ask them to watch your baby while you get back to doing things for u!
I think it's normal. I was feeling like this as well i decided to start working out. It is helping i am also looking forward to going back to work after 3 months maternity leave. Although i will miss my son.
You're a mom you're busy and focused on him not on yourself it's understandable my husband said when the baby is 3-4 months your gonna start working out and my reply was the way I have to take care of you her and myself I don't see myself having time for it and if you don't like it please go find yourself a woman you like while I care for my child instead of my looks