Miscarriage...

I went to the ER last night due to bleeding, I had a gut instinct something wasn’t right. I tried so hard to keep positive! When the ultrasound tech came in the room and confirmed the worse news I’ve ever received ! I had a miscarriage at 12 weeks pregnant. My angel gained his or her wings at 9 weeks 1 day and I have been carrying a baby that hasn’t been alive for 3 weeks! My heart is broken, my emotions are all over the place. I got tomorrow morning for my D and C and I’m a nervous wreck. Please tell me your experience and how you coped with everything... is it bad to already want to try for another baby...? I know I have to wait 3 Months before I can. I keep questioning myself wondering if I would have done this maybe my baby would still be here. And I keep asking myself why? Why me? Why my child? This was my third baby I have two boys at home and had healthy pregnancies with them! This is the first miscarriage I have ever had! Did you try for another kid and have any success ?? Please share !!!