I'm so sorry you are going through the things you are going through. It is very hard not to question God's wisdom during times like these.
I have been there, believe me. I have a quote, which I live by. "Only eyes washed by tears can see clearly." When the sorrow and sadness clears, I have found, in my life anyway, things are a little clearer, things have more meaning, life is so much more special.
We may never know the reason for God's actions in our lives (at least not in this life anyway), but I believe 100% there is a reason for whatever pain and suffering we bear.
{HUGS}