If you are past seven weeks pregnant, seeing no heartbeat may be a sign of miscarriage. But there are many exceptions to the heartbeat by seven weeks rule. Youve likely heard of people who were certain they had miscarried or were not pregnant, and then went on to have a normal pregnancy.

How long will it take to miscarry after no heartbeat?

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.