Endless sadness

My miscarriage happened the morning of my 12 week scan, on the way to the hospital I new something awful was happening but i hoped and prayed that the outcome wouldn’t be what I was thinking, I was told there was no heartbeat and that my baby had stopped growing at about 7 weeks, all those weeks lifeless inside me and I just froze, I had no reaction, then after a few minutes I screamed out and the tears just kept coming. I cried for 2 days then went back to work and I felt I needed a distraction and now I just constantly feel like I need to cry but i can’t, when will this endless sadness stop. I’m such a positive happy person normally, I hate this feeling. I feel so disappointed, upset and angry.