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.
Early Phase. 1  Signs: During this phase, contractions usually last between 30 and 60 seconds; they generally start 20 minutes apart and move to about 5 minutes apart. 2  Look for contractions that continue even if you move around, that get stronger, and that start in your back and move around to the front.