I just wanted to share my experience in case it may help anyone. I decided to attend the serivce of remembrance that the hospital chaplain gives for those who have lost babies through miscarriage. It's nearly 3 weeks since my ERPC and I was in two minds about going as I felt I was coping well and this might set me back, but wanted to have done something that helped to comemorate the baby i would never meet.
Just walking into the hospital again was very upsetting, which I hadn't anticipated, but the service was lovely - it was about 20 mins long, prayers and blessings were read and we all lit candles in remembrance. Afterwards the chaplain and a nurse from the EPU were there to chat to and answer any questions / concerns.
I'm not particularly religious, but it was very moving, and I think it has helped me and DH feel that our grief is real and valid.