My partner and I had our first baby recently. We were so excited to finally enjoy our time together as a proper family after waiting a long 9 months, but ever since DD was born we have been fighting non-stop. Does this happen with every couple after they have a baby? When we (eventually) make up we put it down to the stresses of having a newborn, or me struggling with my PND (although I'm beginning to feel like that excuse is too easy for him to use now).
We've obviously had big arguments before, but this is too far now. It's quite literally happening every day, and it always ends in him shouting insults at me or calling me names while I smugly sit pretending to ignore him. He's admitted he only says these things out of anger and frustration but it doesn't make it any easier to hear him say those things to me day in day out.
He's said more than a few times now about how I'm making it difficult to still be around, and he keeps threatening to move out and stay with his mum, but has never actually left as he "doesn't want to miss out" on DDs life. I think he's slowly but surely falling out of love with me, and only still with me because of her. I used to be a very emotional person, but I don't cry very often now, either due to PND or becoming so used to the arguing, so I don't think he realises just how much this is affecting me and that it's not just him who is miserable.
Is it normal to fight this much and be this uptight with one another after a baby? Or are we on a total downward spiral? 
(Sorry for the long post)