Lost my baby... Devastated.

I was waiting for my first appointment which was going to be today and was so anxious and excited. I was suppose to be 8 weeks along. Two days ago I started spotting, then spotting turned into heavy bleeding. Went to the ER and they saw a gestational sack measuring 5 1/2 weeks and my hcg was low. I knew something wasn't right. Today my midwife informed me that I'm miscarrying. I've been in pain emotionally and physically. I know God has a plan for me I just wish I knew why this was a part of it. I had my son when I was 17 and this was a new exciting pregnancy with my loving husband. I feel broken. When does the hurt go away?