If it is an incomplete miscarriage (where some but not all pregnancy tissue has passed) it will often happen within days, but for a missed miscarriage (where the fetus or embryo has stopped growing but no tissue has passed) it might take as long as three to four weeks.
Can you miscarry and still have another baby?
After a miscarriage, its very possible to become pregnant, have a full-term pregnancy, and deliver a healthy baby. Most women will have a successful pregnancy the next time they conceive after their first miscarriage. If youve miscarried two or three times, your odds are lower, but still good.
Can an embryo grow without a heartbeat?
This is called an anembryonic pregnancy, which is also known as a blighted ovum. Or it may be that your baby started to grow, but then stopped growing and they have no heartbeat. Occasionally it happens beyond the first few weeks, perhaps at eight weeks or 10 weeks, or even further on.