Hi there, I'm so sorry you are feeling this way. It sounds like you are doing amazing under the circumstances, but I'm sure you would rather feel better. I'm just wondering, have you heard of postpartum anxiety? It's kinda like postpartum depression, except, it's the not as much feeling down and sad and tired, but worrying about going places and having a fear something might happen to your baby. It's something a lot of women experience, but it isn't talked about much like PPD is. Have you read this blog before?
http://thefeministbreeder.com/the-da...or-my-anxiety/
Check it out and see what you think. I read her blog a lot and she writes a lot about her postpartum anxiety.
Maybe it would be good to see your GP to talk about how you're feeling and maybe they can help you find someone to talk to or some medicine (if that would be an option you would consider) that might help. I don't think what you are saying your experience is 'abnormal' but if it's worrying you and interfering with your happiness, then it's worth getting checked out so you can get back to feeling like yourself again.
Hope you are feeling a bit better soon! Hugs.