Caffiene decreases your iron absorbtion rate, and also can cause addictive personalities in your child.
Apparently liquorice and aloe vera (eaten, you can use it on your skin) are bad because they are diuretics, so they can cause miscarriage. Any diuretics, laxatives, things that cause muscle spasms are no-nos as well. Also food from the deli, like olives and sun-dried tomatoees are supposed to be bad because of the risk of cross contamination from the soft cheese, but the jars and packed ones are ok.
No liver, because of the high amount of vitamin A.
They say even one alcoholic drink a week can be bad for your baby, but a few teaspoons in a trifle is ok every now and then. Alcohol is ok if it has been cooked at a high temp for at least ten minutes, so in sauces it's ok, but you're better off avoiding them unless you cook it yourself, so you know all the actual alcohol is evaporated, and you are just left with the taste.
Herbal teas: stay away from raspberry tea, cohash, slippery elm, ginseng and green tea – these may stimulate contractions.
Avoid pates and ready made salads, including salad bars.
Don't eat anything raw, except well washed fruit and vegetables.
There's a whole bunch of herbs and such you can't eat. Marshmallow root, wormwood, deadly nightshade (obviously) pennyroyal, anise, liquorice root. There's more, but I can't think of them offhand.

Don't use rosemary or cinnamon essential oils directly on your skin as they can raise blood pressure.

It's best to contact a professional naturopath before using any essential oils, and taking any herbs or natural remedies, at least consult your doctor before taking any herbal teas or such.

Hope that helps. Now you just have to remember it all LOL