That would depend on why it's nonviable.
Every women's body is different and every pregnancy (viable or not) can come with it's own set of complications.
In some cases the body will detect the problem so early that it simply flushes the system on the next menstrual cycle. If this were going to happen it would typically be within the first 2 to 6 weeks of pregnancy. The flow would be somewhat heavier than normal but everything would return to normal afterwards.
If the pregnancy has gone on beyond 2 to 6 weeks and no menstruation has been triggered than it is possible for it to take the entire 9 months. It is possible to give birth to a body(child) that is not alive.
The only way to have any reliable accuracy in predicting how long it will take is by a qualified medical professional examining why it is nonviable and determining if any special procedures should be used to speed up the process of removal.
9 months
9 months 40 weeks
A pregnancy usually lasts for 9 months
40 weeks from the last period.
9 months
it lasts for 4months
3 days.
Unfortunatley a non-viable pregnancy is a pregnancy that has occurred but for some medical reason will not last or carry to term... Such pregnancies could be that the embnryo implanted elsewhere than in the uterus and such... Sometimes it happens so soon in the pregnancy the woman doesn't even know she is pregnant... And know most pregnancies only spontaneously abort (or miscarry) because of a good medical reason... This is the term used to describe a pregnancy that is destined to end in miscarriage. It can be used to describe a chemical pregnancy, or blighted ovum. It can also be used to describe pregnancy in which fetal demise has already occured. If this is happening to you, I am so terribly sorry. I recently had a miscarriage at 7 weeks, and am still feeling the effects of it. I hope you are well, and good luck.
Yes it is still a pregnancy even though it is not viable, it is still attached to your uterine wall and causing your body to show pregnancy signs. If it is not a viable pregnancy then it will pass and you will have a miscarriage or the dr may have to manually remove it, they usually prescribe meds first to get you to have contractions so your body will do it naturally. good luck
Pregnancy in ferrets lasts 38-42 days or 6 weeks
Pregnancy last from 38-40 weeks.
12 months duhhh