Hi Moonmagic,
Well, this sounds like quite a dream!
While my thoughts may not be accurate, (as you are the only one who can truly decipher your own dreams) I will give you what I can.
If we think of black and white movies, or photographs, it usually means 'from long ago'. Rain in movies, quite often indicates cleansing, or tears. The child is a giant, larger than life so to speak. You know it won't hurt you and weren't frightened.
Could this child be a 'huge' aspect of yourself that is needing recognition? Is it a part of you from long ago which you need to work with? This child has got your attention and wants to communicate with you. Maybe now is the time to do some self work, and look into this? It appears as if this child lifts you up and carries you. Have things been kind of rough lately, and you are thinking how much easier it was being a child? Maybe it is time to acknowledge the kid in you and go out and have some fun. Have you been so busy working that you've forgotten what it is like to really have a good belly laugh? Is this child 'crying' because it is not being recognized?
As you can see there are different ways to look at it. You will know instinctively what is the right way for you to interpret this dream.
Break it down symbol by symbol, write down your own personal definitions, look at absolutely everything in the dream as an aspect of you. Spending some time working with it will likely reveal some interesting things. Have fun with it!
With light and love,
Featherpoint