Postpartum depression?

I have a 3 week old daughter who's just a little angel. However, since my husband and I brought her home, I've noticed that I'm more irritable than normal and I'm constantly needing everything to be organized and perfect or it just drives me up a wall. On top of that, I feel like I'm burdening my parents by coming by to visit with the baby. They've voiced no complaints. I also feel like a failure as a wife and a mother. Don't know why, I just do. Could this be from postpartum depression and what can I do to fix this so I can stop being a royal ocd bitch?