I agree with Debra. Sleeplessness can be an indicator of PPD. I also had anxiety (pre-ds), and then after his birth, it came roaring back with a bad case of PPD. I could not sleep at all. I laid awake listening to every little sound. Ds slept in the same room, and I couldn't sleep at all with him in there. We finally moved him to his room, but I still listened on the monitor. I would get anxious feeling every single time he made any noise, afraid he would wake up.
I wound up seeing someone for PPD, and the first thing he did was get me a very tiny prescription for sleeping pills. At that point I had not slept more than 2 hours a day in weeks. And then when I would lay down, it was like I was so anxious about everything, including falling asleep!, that I couldn't fall asleep. So, I had to take the sleeping pills for a few nights, and dh had to do baby-duty at night. He was so amazing, he actually slept in another room with the baby monitor, so that I could sleep without hearing a peep. After one night of full sleep, I felt like a new person. I also had to get on an anti-depressant.
Anyhow, you may check out any symptoms you have and see if they match up to PPD. If they do, I would suggest seeing someone as soon as possible. There is help out there, and it's really important to get some! I felt like a war survivor after I got back to "normal". I wish I had those early weeks back with my ds now, so that I could enjoy them like I should have then. :cry:
HTH!