Hi Kirsty,
I am so sorry to hear about your loss.
I suffered a miscarriage last year, and from memory, I bled for a week. It was quite clotty and heavy for the first 2 days or so. I didn't need to have a curette as it was a complete miscarriage. However, I did have a D&C (dilatation and curettage) a year before.

This is the information I have found;
Dilatation and curettage
A dilatation and curettage (D&C) is an operation performed on women to scrape away the womb lining. The cervix (neck) of the uterus (womb) is dilated using an instrument called a dilator. The endometrium (lining of the womb) is then lightly scraped off using a curette.
Apparently it is safe to start TTC after 1 proper cycle... though most Dr's say to wait 3.
Hope this helps.