35 Weeks pregnant and menstral like cramps?

Ok so I am 35 weeks and 4 days pregnant. Baby dropped head down at 32 weeks into pelvis. For the past 3 days i have been experiencing mild menstral like cramps along with braxton hicks. I know there is no problem with my baby girl as she is moving all the time and getting hiccups often lol. She is already almost 6 and a half pounds. Sometimes the cramps can be a painful, sometimes they seem to go for an hour or two and sometimes i will get them quite regularly. Could this be a sign of labour? What are the chances i will make it till 40 weeks?