I only asked about the pill because of what happened to me.
I posted this thread a few months back (I am VictorianSqualor) about the huge levels of anxiety I was feeeling.
There is something wrong, with both of you, it isn't 'normal' to be feeling this anxious ~or maybe it is? So many of us go through this it almost makes it normal, I suppose, but it's not 'right', it's not how we are meant to feel.
What's going on in your heads, the general worry, is what every parent goes through, (at least this is how my doctor explained it to me) but there is a healthy level of anxiety (general checking on the baby before bed, or checking the door is locked etc) then there is an unhealthy level of anxiety, one that stops us from relaxing, from being able to do the things we would normally do ~such as sleep.
PND can manifest itself in many ways, anxiety being one of them. Somewhere in your head hormones aren't at quite the right level, which sometimes it is due to something coming in from outside (i.e. the pill) others it is ourselves producing these hormones, but again it is fixable.
You need to go and see your GP, both of you, and be completely honest, tell them exactly how anxious you are and see what they suggest. In my case GP said to stop taking the pill (other hormone-type meds you may or may not be taking can induce this added anxiety too, not just the pill) and if there was no change then we were going to try anti-d's. If your GP does suggest anti-d's please listen, and take them, this may be manifesting itself as a mental anxiety, a condition in your head, but it is most likely a hormone imbalance and that is what anti-d's are made for.
Lastly, keep talking on here, I found that once I actually started talking about the problem I realised just how ill I was and felt more able to go to the GP and explain how I was feeling.
Have either of you told anyone you know?