I'm agnostic (I think that's the word for it) but I do now believe that sometimes miracles can happen (though in my case it could be explained away by extremely good luck I suppose)
I have a bicornulate uterus and over the last few years have had eight miscarriages, some much later on.
I now have two children (3 and 6 months old)
It just so happens that in each of their pregnancies, at exactly 8 weeks, we have been on holiday in the Isle of Wight. (Not planned, just a coincidence).
On the first trip we went on a visit to Godshill and decided to go up to the little church at the top of the hill.
I was pregnant with DD and just decided to light a candle at the feet of the statue of (I think) Mary holding a baby. I broke down in tears at the thought of having to go through another loss. I wrote on one of the prayer cards.
I was so happy when dd was born alive but didn't really connect it with the trip.
However when I found out I was pregnant while on holiday there again you can be sure I dragged DP to Godshill again 
We went back again earlier this month. I took both of the children in there and lit a candle to say thank you. I felt such a huge surge of peace.
I went from not believing in anything really to feeling that there is definitely something. (Though I understand and agree with the 'well why does bad stuff happen at all in the first place then' way of thinking)
We are planning to get married there soon. I just feel a strong attatchment to that place now.