medical miracle

I often catch myself staring at my boys in awe and wonder because I still can't always comprehend that I, of all people, managed to produce two children in one go.  Even after all this time I still have trouble coming to terms with this and I think I'm still in shock with the fact that there are two, identical little faces staring back at me and I wonder for the millionth time- how did that happen? And the answer is what's known as a 'medical miracle'- one egg splitting into two, for no apparent reason. 

I'm really glad my egg chose to split.