This whole thing is really quite worrying.

I've just been googling, and apparently some researcers now recommend that pregnant women avoid exposure to BPA and pthalates:

Other researchers are also cautious. "I don't want to induce panic, but I think we should be addressing women of childbearing age," says Foster. Because phthalates and bisphenol A seem to have the greatest impact in the womb, he and Swan suggest that women who are pregnant or are planning to conceive take the most precautions. "These fetal effects are permanent and irreversible, while impacts of adult exposure appear to be reversible," explains Swan.

Fortunately, bisphenol A is relatively easy to avoid during pregnancy, says Dr. Hugh Taylor, chief of reproductive endocrinology at the Yale School of Medicine. He recommends that expectant women avoid polycarbonate food containers, skip canned foods, and delay getting any dental sealants unless absolutely necessary. Phthalates are a bit trickier to avoid, since they have so many applications. But Swan recommends avoiding pvc food containers.
It's easier said than done to avoid tinned food though. I must get back to my resolution to use dried legumes and fresh tomatoes rather than tinned ones. DH and I have already changed to microwaving only in glass. There was an article in Choice mag recently about pthalates in the lids of glass food jars leeching into the food.