Just a thought in relation to the side preference issue - was there anything unusual about the birth that could have caused neck or shoulder problems for your DD? The only reason I ask is that my friend had similar issues with her DD and found that due to a forceps delivery her DD had a shoulder injury so couldn't turn to feed on the right side without pain. After some oseopathy she is now feeding both sides fine.

I know people who swear by the Fenugreek and given that it is natural you might want to give that a try before motilium.