You are totally normal. I know this stage is so hard. You can still look cute in sweats. Even if you don't feel like it, make yourself shower and get ready early in the day. Treat yourself to a manicure, pedicure, and/or a hair cut. This stage will pass and you will start feeling better.
For me when I don't get ready all day and just clean, cook, take care of kids, it really affects my mood, I can see a huge difference when I take care of myself, take a shower, get ready, then take on the day. Now I need to go take my own advice and go get myself ready :-)
Hang in there. I know it is so hard, especially when it's not your first, you can't sleep and focus on yourself like we could when it was our first.
Hugs!