Slow early stages of labour pains?

I will be 36 weeks tomorrow with baby number 3 and i'm experiencing the same thing, i never had a natural labour with my first 2 as i was induced and the contractions were strong from the word go. It could be the start of a slow labour although my midwife told me yesterday that because this is my third, the pains could be because the ligaments are stretched out already and there isn't as much support there for baby anymore hens the pain. I would keep an eye on it hun and hope that it is labour. My sister-in-law had contractions on and off for about 2 weeks till they realised that she had a urine infection that was causing them. I really don't know what to say hun, you've been through it all before and you know what people are going to say, just have to try a bath or shower or walk around for a while and see if anything develops. Good Luck hun and sorry i couldn't be any more help! xXx