Caster oil I wouldn't be doing that again either. How about acupuncture, massage with pressure/trigger points, light touch nipple stimulation, I 2nd the sex thing (a few times) apparently not only the 'action' down there but also the sperm can get things happening, I don't know about the big walk, that just sounds like it would make me tired, a slow 15 mins would be ok but don't go over board, you will need your energy in labour. Goodluck, will be looking for your BA soon