STM but my water broke early with DS so I never experienced any contractions until I had a dose of Pitocin in the hospital. I'm 39w5d and was 2.5-3cm and 40% dilated at my 39w appointment last week. I have been experiencing infrequent BH/Mild contractions for the past day or so. They are more intense when I stand up, move around, walk, etc. and are accompanied by lower back pain, but not like I would expect with true contractions. And, they aren't really timeable. Other symptoms are pelvic pressure, loose stools (sorry, tmi), and feeling like I have to pee every 5 minutes, which hasn't happened up until now.
Am I crazy or do you think this really is the start of true labor? I'm at work today and trying to keep myself distracted but it isn't really working. FWIW, I went into labor with DS on his due date and he was born the next day after a relatively quick labor (6 hours).