My water broke when I was on the exam table doing an initial monitoring, and up until then the 2 hours of light contractions were no big deal at all. (mamanatural.com)
The early phase of labor is marked by very light contractions that may be 20 minutes or more apart, gradually becoming closer, possibly up to five minutes apart. (pregnancy-info.net)
At 6:00 PM light contractions started and they grew in intensity starting around 8:00 PM and my son was born just after Midnight. (theholisticmama.com)