I'm so sorry, even though you knew it was coming until you get that definitive result there's always a bit of your heart that hopes. I remember that crushing phone call. So awful.
I think I felt like it was all unreal for months afterwards to be honest.
In terms of surgical most NHS doctors can't do them after 12 weeks I think but you can have them up to 16 weeks. Usually the hospital can refer you to a private clinic (but it's NHS funded termination) arc will be able to give more advice.
Do you have a screening or bereavement midwife at the hospital? They should be able to sort it for you.
Having said that I have had a mmc medically managed at 14 weeks. The process is pretty much the same. All in all it was ok. I opted for the labour ward as that's where is felt comfortable after loosing dd2 as well. You can be on the gyne ward, usually in a private ward, so you don't have to come across pregnant women or babies.
I opted to see dd2 and ds afterwards. Dd2 was 22 weeks and so looked like a tiny sleeping baby. Ds was much smaller and loooked very much like a foetus rather than an actual baby. I'm still glad we saw him. They took prints and photos and I left him with the comforter we'd bought him. We chose to have the hospital organise a service which we attended and we got ashes back after his cremation. We also did the same for dd2. I'm telling you about my experience with ds as although he died rather than tfmr he was a closer gestation to you. We did the same in terms of prints, photos and a service for dd2 as well.
Both of them have plaques in our local sands garden and their ashes are together in the baby garden there.
Please don't feel that because you are having a tfmr you cannot grieve your baby or behave in the same way you would if they were stillborn.
Saying that, none of those options might be what you want. Choose whatever will help you get through this. I just know that lots of women who go through tfmr feel they shouldn't do the whole prints and photos stuff.