Really sorry to hear your lost. I did not experience the pain you are going through but would love to give a some words to you.
It seems that you believe in God too, please continue to trust in Him. For He is the One that can really comfort you now, apart of people who care about you around. Indeed in times of pain, we always ask Why Why and Why?! God gave you a baby, joy and hope, why took it away? Do stay calm and stop asking why. Perhaps you will know why after you stop asking why.
Do not be afraid of going back to work or thinking how you are going to face people. Trust yourself to be the strongest woman because after awhile, pat yourself and say "I can't believe I have successfully walked out from this pain and I feel stronger than anyone else!" Everything happened for a reason. Although it's hard to be, but try to think another way round. I believe people around, your family, your husband are showing more care and love to you. dont't live in the past and miss something you have lost, appreciate people around you. Another baby will be blessed to you again someday.
Of course, continue to pray for the baby. Chill and relax, take a few days break and do not think too much. Cry out the sad tears if that will make you feel better.
All the best and God bless.