Well, people say it is 9 months. That isn't actually completely true. It's actually sort of a grey area. Women are pregnant for 40 weeks, but the pregnancy is calculated from the first day of your last period. You weren't technically pregnant on that date though. You probably became a few weeks after that date.
4-6 weeks
Can you take birth control pills and still be pregnant Can you take birth control pills and still be pregnant
Ladybirds lay eggs and do not become pregnant (they do not give birth to live young).
17 months
guppies stay pregnant for about a month before giving birth, other fish take longer, and others lay eggs (don't get pregnant). depends on the fish
A mouse will show signs of pregnancy at 15 days and give birth in about 18-24 days.
It is best to wait at least a year to try to get pregnant again so your body can fully heal before going thru the same rough process again. If you get pregnant soon after having a baby the chances of losing the baby or having a pre-term birth are higher.
A female koala is pregnant for 33 to 35 days before giving birth.
Never. Chimpanzees can not give birth to young cows (a calf).
pigs are pregnant with usually 7 pigs, they are pregnant for 7 months before giving birth
All rabbits are pregnant for a month before birth.
Plecos don't get pregnant, and they don't give birth. They are egglayers, and the eggs are fertilized externally. If she has a bulging belly she is either sick or extremely well fed.