Just needed a womanly booster:

3 1/2 c. water boiled, add 4-6 t. of various herbs.  Steep 4 hours minimum.
or
1 qt. water, 2 handfuls tea.
Miscarriage may be possible:
Shonda Parker said it’s only the Rubeus Idaeus (sp?), not the wild raspberry leaf, and only if you’ve had a prob with miscarriage.

http://sweetbirth101.wordpress.com/2010/03/12/safe-herbs-for-pregnancy/