sus : It's not dang gui, it's dang shen.
For me, it helped during my last pregnancy. In fact, even when not preggie, i take tis occasionally aft 'gd fren' goes hm.
popping 4 weeks earlier will be ard 36weeks gestation. Babies are considered full term when borned at 37 weeks onwards. However, if prematured baby's weight is 2.3kg & abv, still considered healthy. =)