A successor may refer to: Someone who, or something which succeeds or comes after (see success and succession) Successor (horse), an American Thoroughbred racehorse. Successor was the working name for the class of British ballistic missile submarines, since renamed the Dreadnought-class.
How long it lasts: Early labor is unpredictable. For first-time moms, the average length of early labor is six to 12 hours. It's often much shorter for subsequent deliveries. What you can do: Until your contractions increase in frequency and intensity, it's up to you.
The lungs, for example, may not be able to breathe air, or the baby's body may not generate enough heat to keep warm. A full-term pregnancy lasts about 40 weeks. Having labor contractions before 37 weeks of pregnancy is called preterm labor.