Environmental pollutants which mimic the effects of estrogen inside our bodies are called xenoestrogens. We are confronted with these in several ways including car exhaust, pesticides, solvents (present in nail polish and remover), emulsifiers present in soap and cosmetics, plastics (think water bottles) and synthetic hormones found in birth control pills and other drugs which can be flushed into the sewers and back in our soil and water. When a woman is pregnant, high amounts of this female hormone are designed by the placenta, beginning throughout the end of her first trimester of being pregnant on and on on until she gives birth to a baby. A pregnant woman's progesterone levels are approximately much higher than it is in the woman who is not pregnant.