I am so sorry for your loss!! I lost my first daughter, Lindsey at 36 weeks due to severe pre-eclampsia. It was very sudden and so difficult. Most people can not begin to imagine what the pain is like and unknowingly say the wrong thing. One thing that did help was my husband and I went to a loss support group (for pregnancies - it is called MIS - miscarraige, infant death and stillbirth.) I dont know if this is something you are interested in or not, but maybe your hospital might know of a group in your area. If not, maybe the internet support groups can be of some help. This is how I found Preeclampsia Foundation 3 1/2 years ago, and am a Board Memeber today. My story is on the website if you want to read it.
I hope you get some answers to what happened. After our loss, I found out I had Factor 5 Leiden ( a gene that makes my blood clot) and I took Lovenox shots through my next 2 pregnancies. (Both were pre-e free and I have a healthy daughter - 28 months old, and son, 10 months.)
Please know that you are in my thoughts and know that each day your pain will get a little bit easier. We will never forget our precious children. They live on with us in our hearts.
Please feel free to email or call if you want.