I need some help. I have been taking Phentermine on and off for the past few months. I found out I'm pregnant, approx. 3 or 4 weeks. I'm scared this could be harmful to the fetus. Does anyone know what the chances out there are. I've tried to read all weekend and find information and I find things that are contradiciting to one another. Any information that could be provided would be great. I'm calling my doctor today but I know she will not see me right away.