This sounds like a matter to be openly discussed with your obstetrician, focusing on what drugs you absolutely need to be taking, and potential risks both from them and from herbal supplements.

There's a long list of herbs that herbalism sites warn pregnant women against taking. Another problem is when unregulated supplements contain ingredients not listed on the label. For example, ginkgo supplements were found to contain colchicine:

"(In testing) placental blood taken from 24 pregnant women, Dr Howard Petty and his colleagues at Wayne State University in Detroit were surprised to find colchicine in five of them. The levels were high enough to have harmful effects and were 'entirely unanticipated'.

Colchicine, found naturally in many plants, is sometimes used to treat gout. But it interferes with cell division and can be fatal at high doses.

At lower levels, experts say, it can pass through the placental barrier during pregnancy and cause 'severe damage' to the foetus. Mothers are also advised to avoid it while breast-feeding since the drug may be passed to a child through their milk.

Dr Petty and his team were baffled by the presence of the toxin in the blood samples until they realised that the women with the chemical in their blood had all been taking herbal supplements.

When the researchers tested a popular herbal supplement containing ginkgo biloba bought at a local pharmacy they found that it contained colchicine.

The researchers only tested one sample of ginkgo biloba, though they refused to say which brand. But Dr Petty warned that the problem could apply to other herbal medicines.

'Such supplements should be avoided by women who are pregnant or trying to conceive,' the researchers say. http://www.dailymail.co.uk/health/article-69512/Why-pregnant-women-avoid-herbal-cures.html#ixzz3sbrPM0dN

In general, minimizing drugs (prescription or herbal) to only what's essential is going to be a healthy approach.

I only take pure herbs and flowers that I personally grow, except say ginger because my dog loves to dig it up. She leaves the cactus alone.

Dragua ... The "purity" of the herbs and flowers is not an issue. The incredibly complex ways that they can interact with the human body is a problem. As well as the amazing number of ways a pregnancy can screw up.

1 - You say you think you may have PCOS

2 - Were your miscarriages due to uterine malformations, hormone level problems or what?

Unless you know what the problem is, you are just as likely to make it worse by throwing herbs at it than fix it.

I think herbs are capable of fixing unknown issues. The person needs to bring their body into balance so that it can multi task. Start with improving your diet with green leafy vegetables, exercise and drink water. Do a cleanse with juice after that to bring up latent issues then fix them as they arise.

in a crunch many herbs will prevent a miscarriage but you need to work with an herbalist as we all have favorites