Ali - I still feel like this with both of my girls. It actually got worse for me when DD2 was born and I kept thinking how we could have lost her. Then I started thinking of all the things that could go worng with DD1 now that she is more independant. I'm not so worried about things with SIDS with DD1 but more like her running onto the road etc. DD2 I constantly check her breathing to make sure she is ok.

Sometimes I just have to take deep breaths and make myself think positively because if I kept thinking like that then it would be debilitating. I make sure I think of possible dangers, try to minimise them and then move on. Focus on what you can control, not what you can't.