Couldn’t find the baby it was probably flushed 😢

I had a missed miscarriage at 11 weeks and finally miscarried last night. I tried so hard to find the baby but couldn’t find it amongst all the blood and other tissue. I feel so guilty that it was flushed, I even brought a special plant to bury them in. Has anyone flushed their baby either on accident or on purpose? How do you get passed the fact that they are in the sewer?