Missed miscarriage

I found out on the 20th of December that my babies heart had stopped beating, I then had it confirmed on the 23rd of December but opted to pass baby naturally.

I should of been 9weeks and 1 day when I found out and 9weeks and 4 days when confirmed but baby stopped growing at 7weeks and 3 days

I’ve been getting cramps and lower back ache for a few days now and loosing symptoms such as my sore breasts and sickness but still no bleeding

I should be 11weeks tomorrow so nearly 4 weeks since my sweet angel died my question is when is most common for my body to realise and pass the pregnancy? I don’t want medical intervention unless absolutely necessary but because I’m coming up to the 4 week mark will I need to ask? I don’t want to risk infection as I have 3 beautiful children to care for still

Any stories about letting your body naturally take its course are very welcome google isn’t much help