I miss my baby...will I ever get over this?

I had a miscarriage yesterday at 12 wks. The physical pain was worse than labor to me. But the emotional pain and heartache is unbarable. I was upset when I first found out I was pregnant since I already have a baby boy. But me and my husband became very excited. I cant believe this is happening. I have paralyzing anxiety attacks and feel like my world has just stopped. The only thing keeping me going is my sweet baby boy. Ugh I just wish this didnt hurt so bad. Anyone been through this? How did you cope?