I tried everything under the sun with my first, including jumping up and down (a sight that reduced my husband to helpless giggles), power walking, lifting heavy things, red wine, Chinese food, and swimming. None of it worked. I didn't try castor oil or "nipple stim" because apparently they can bring on dangerously hard contractions-so I wouldn't recommend either of those. Bottom line is, it will start when the baby's ready. I know how much it sucks to wait, though. Hope it ends soon!