Sarah, when I had my last visit with my Midwife at 28 weeks she told me then that it was fine to start drinking it then. So yep, once your in your into your third tri seems to be about right. Basically all its supposed to do is to help tone your uterus and help you to have more affective contractions. Don't know that my uterus need ths much more convincing to contract although the closer the big days I hav have them connect an IV to me with it flowing through it. LOL

Take care
Trish