I sadly had to have a tfmr last year with my first and a post-mortem/genetic testing. Nothing was found and I was told the condition was just a result of "one of those things". Basically, something didn't form correctly and then it had lots of knock on effects. That it wouldn't affect any subsequent pregnancy.
Nevertheless, I was told by the consultant that in my next pregnancy (this one) I'd be consultant led (by her) and given an extra scan at 16weeks. Just to check everything is ok. She was a lovely lady and even said she knew I'd be back seeing her again soon.
I got pregnant again some months later. I told the midwife what the consultant said at booking and she put it all on my notes. But then, i saw the consultant's registrar at 13 weeks. A man who just seemed the complete opposite. Totally disinterested. He literally mumbled something along the lines of he's not sure why I'm there and discharged me back into midwife care.
I never asked for a 16w scan. I just hoped a date would come through the post but it didn't. I never mentioned it to anybody again because quite frankly, I just don't have any fight in me anymore. Instead, I paid for a private gender scan at 16w. I found out the sex and the sonographer told me baby looked fine as far as she could tell. This, of course, made me feel better until my 20w scan.
I'm not sure why I'm telling you this to be honest! Just because our experiences are quite similar in some ways, I guess. Though they're not too similar, my loss was in the second trimester (just). Your experience was traumatic. 
The only other thing that I remember is the bereavement midwife said I could phone at any time. Can you find the details directly from your hospital's website or any of the information given to you after your loss? (I was given leaflets).
Worse case scenario, get in touch with PALS. The patient liaison service, every hospital has one I believe. They might be able to help you.