Hot mess

So my LO will be 3 weeks old tomorrow. I'm a SAHM. I stay in my pjs 24/7 unless I have to go somewhere. I'm lucky if I brush my hair in the morning. & I only am able to shower once or twice a week (on my SO's days off from work). When do I start to feel like me again? I'm so concerned with constantly holding my baby and making sure he never cries that I've let myself go and pretty much forget about caring for myself.. I'm a hot mess.