I miscarried at 17 weeks

I'm so sad to say that we lost our 17 week old baby boy last Saturday the February 13th..We are devastated and are confused and just have very mixed emotions right now. I was bleeding lightly since 13 weeks but hadn't seen it so bad until 15 weeks and went to the ER then my OB said I had an SCH that would go away within a month. At 16 weeks I went to the ER again for heavy bleeding and contraction like cramps. They didn't want to do a pelvic exam because of the SCH you can't put anything in the vagina. They did an ultrasound, baby was moving and heart was beating. So they discharged me and diagnosed me with a uti. The next morning I had my baby at my house by myself with my 21 month old daughter watching as I was suffering in pain and she seen me actually deliver my baby. He wasn't moving or breathing. I was so crushed and scared I wanted to save him but he was gone. I don't know what to do I constantly am thinking about what happened that day, I'm traumatized. Is there any ladies out there who have suffered a miscarriage before? I would like to see if anyone else has gone through something similar and would like to hear your story.