Wormwood, it is a good idea to be careful when you are pregnant. Don't even think about amalgam replacement or chelation until after you give birth(or after you finsh breastfeeding if you plan to breastfeed you baby). You should be concentrating on nutritional supplements now, and make sure you get enough iron, folic acid, B12, iodine(not megadoses, but decent sized normal doses) and magnesium, zinc, selenium, calcium, etc. Make sure to get enough B vitamins and vitamin c. Those who are mercury toxic tend to be mineral deficient.

Make sure you don't take wormwood while you are pregnant. It is even advised not to take licorice root during pregnancy.