I think I had led a charmed life up to and including my first pregnancy and the birth of my 1st DD. When my 2nd pregnancy ended in miscarriage at 4 months, I was shocked to the core. Surely these things happened to other people not me and my nearest and dearest? The third pregnancy was a nightmare of worry and anxiety, with every tiny twinge sending me into a paroxysm of fear. When DD2 arrived safely the fear diminished slightly but could easily be reignited by any accident or illness that came a bit too close to home - I had totally lost that carefree belief that bad things only happened to other people. Talking to or hearing about people who had suffered bereavements, horrendous injuries, house fires and worse did not inspire sympathy for them. I reasoned that if it had happened to them it could happen to me.
It was only when I began to train as a Counsellor (and had to be Counselled myself as part of the process) that I realised how this attitude was spoiling my chance of personal happiness or contentment and that I would have to tackle it, eradicate it, if I were ever to be able to help other people. CBT can be extremely helpful at countering persistent patterns of negative thought with constructive responses to awful events i.e. instead of going over and over the traumatic events in your mind you force yourself to think of something you can do, however small, to help the person who has suffered or make things better for those who will suffer in the future. This is the impulse that drives us when we take flowers, bake a cake, give a hug or run a marathon to raise funds for Cancer Research.
Loobs I think you are correct in your assessment of what has caused you to be so anxious about your loved ones. You will want to be strong and positive for your daughter's sake Unlike others, I am not convinced that time will heal - the longer you remain so worried the more intractable the problem will become. I would advise (for what its worth) that you discuss this with your Doctor, with a view to having a few sessions with a counsellor or therapist. Nip it in the bud so to speak.