Ngala... its best not to worry about the things that might happen.. anything can happen but hey you deal with the hand you were given.
A few of my friends kept saying to me that you are only dealt what you can deal with... i used to think about that and then to be honest when you are at Womens and Childrens hospital even though at the time yu feel like your world is caving in.. you see other people in much worse situations with Critically sick children and start thanking your lucky stars that you are not in some of those situations.
I was lucky that throughout everything I never started blaming or feeling resentment toward Luke or DH and my Dr. told me I was suffering from "circumstantial depression" because as soon as things started picking up i would too... and then of course i would go back down but I think that my main problem was lack of sleep. He slept no joke for an average of 4 hours in a 24 hr period and i would only ever get half hour here and there.. shocking.
I was really unlucky... and i have finally realised that and live in the hope that it wont happen again !!!! if it does though i am better equipt to deal with it.

I saw you posted something about people being shocked at you being a young mum and to be honest I wish i had not waited so long !! i was married when i was 21 and had luke when i was 30.. good for you I say !!!!! xx