Quoting nursemaya (6weeks):" sounds like early labor. It could last hours to weeks. when you are contracting every 3-5 min lasting ... [snip!] ... every 3-5 min lasting 60 sec. for a few hours and they hurt then go in... or if you rupture. good luck it will be soonish"
I'm kinda at a loss here. My first thought was not to tell you to wait that long b/c this is your second baby... Then I saw the whole rupture of fluids part and kinda concur now. Second time moms (or even more) tend to go fast. I don't think you should wait 2 hours but I also don't think you should go in unless you are in a lot of pain. If you're like me and have a high pain tolerance, perhaps going in when they start getting uncomfortable instead of painful is a better idea. Just think of it this way... Would you rather be at a hospital or in you livingroom? lol, it happened to a girl on here I saw just last week b/c she waited too long.