Naturally inducing labor

37 weeks and want to get a kick start! My husband leaves for training (he's military) and I really want him to be there to meet his son before he's gone for months.

My doctor says now that I'm 37 that it's safe to start trying to kick start labor but because I'm not high risk they won't induce (which is great because I do not want poticin at all)

Anything work for anyone? I've been taking evening primrose and my birthing ball is like my best friend right now. And definitely don't want to try castor oil since I have IBS, it'll do way more harm than good for me.