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.
Your contractions are likely to happen every three minutes or four minutes and last for between five seconds and 60 seconds. By this time, your cervix will have opened to about 4cm (1.6in). If you're a first-time mum, active labour may take about eight hours.our contractions are likely to happen every three minutes or four minutes and last for between five seconds and 60 seconds. By this time, your cervix will have opened to about 4cm (1.6in). If you're a first-time mum, active labour may take about eight hours.