I'm sorry to hear about your loss. I know exactly what you mean about not taking anything in at the doctors - the nurse told me some things which I can't really remember but she did give me a leaflet, summarising what she had said:
The part re: non-medically managed miscarriage said:
"you will have period-like cramping pains and heavy vaginal bleeding. It is normal to bleed for up to two weeks.
A miscarriage usually completes within two weeks. However it can take longer than this. If this is the case, regular follow-up appointments with your healthcare team should be made.
Developing complications is rare (<3 in 100 will develop an infection). However, if you experience flu-like symptoms, a fever, severe stomach pains and heavy or unpleasant-smelling bleeding, contact your health team as soon as possible".
I'm sorry if that's TMI but I hope it's useful.
Lots of

to you x