Just lost the baby...devistated

I was 8 weeks. The sac at the 7 week screen (had it early because i lost my grandfather and would have been at a funeral when i needed my scan) was measuring 6 weeks 6 days. I started spotting afterwards and continued for 5 days. Baby had a good heartbeat and i went back to the er and they said my outer part of my cervix was open but inner was closed and baby still had a heartbeat but the sac was now 2 weeks behind baby. I was put on pelvic rest (was already not having sex) and to drink fluids. I felt cramping last night went to the bathroom as i was feeling a large drawn out cramp... passed the baby with sac intact. Baby looked perfect. Could see the nubs the spine the tail the eyes..everything. I know that this stage in the game that if it was this early it was incompatible with life... but it still kills me. I just had my son 3 months ago and after 6 yrs and a previous miscarriage i was happy i got pregnant so quickly. So today I have to go to the dr and they said they will send me for genetic stuff.. i just want to know. I also want tested again to make sure there isnt any other reason and to see if its a good idea to even try again. I am just so heartbroken but as a nurse i am rationalizing so hard in order NOT to completely come unglued.