HI there ladies!

Just thought i would put my 2 cents of expertise in this.
In regards to threatened miscarraige, it could be due to different factors:
(1) Qi and Blood deficiency
(2) Kidney Qi deficiency, not holding
(3)Heat in the blood
(4) disharmony of the Penetrating (Chong) & Conception (Ren) vessels
(5) Stagnation of Liver Qi
and so on...

In the case of pre term labour, it is pretty much the same TCM diagnosis. The constitution of the person is weak and deficient and cannot hold the baby to full term. This is why in TCM, the focus of TTC couples is to prepare the soon-to-be parents to be in the optimum state and balance to conceive. i.e if QI and Blood is deficient, then replenishing them; if Kidney Yin/ Yang is deficient, then nourishing Yin/ Invigorating Yang etc.
Acupuncture and herbal medicine can both be used at any stage of the pregnancy (preconception and postconception) to assist in bringing the pregnancy into full term with mothers who have had a repeated history of premature births.
Hope that helps a bit Liz! Feel free to fire away on questions

Now my question for u is are u TTC? How many kids do you have and how far apart are they?