Right, lots and lots of walking, frequently and long walks
Squats, long deep low squats
Red raspberry leaf tea - you can get it at health stores and I think Dischem has it
Evening primrose oil tabs. You can drink them or you can (sorry for the graphicness) insert them up to your cervix - as for frequency, I think it said when you are going to bed so that you know it stays put, but you can look it up on doctor google.
And apparently the most effective way is to do the funky money with hubby, apparently the little swimmers help soften the cervix...I know its a bit challenging right now with the hugeness of the bump in the way, but if you are desperate, maybe try that.
All these things are natural type things and cant harm the baby, but know that if the baby is not ready to come yet, doesnt matter what you do, the baby will not come.
These are not bad for you though, walking will help you should you go into labour, the tea apparently is nice and evening primrose oil is a very good supplement to take in general (helps with sore ( . )( . ) as well)
Good luck mommy, let us know how it goes!