Fear of losing another

Maggie • My husband and I had been TTC # 2 since September 2014, baby number 2 was lost on Mother's Day 2017. Our rainbow baby will be here April 27th. 🖤 We have a 6 year old little girl and a little boy on the way.
I lost my baby 2 days ago. I'm so scared I'll lose the baby if we conceive another. I have so many fears running through my head. So many moments I keep replaying to see what I did wrong, what I did to cause this so it won't happen again. I'm so scared, I'm so angry with myself, I'm so lost. We tried for almost 3 years. What did I do wrong!? I have been crying for 2 days. I don't know what to do.