Hello, and I hope I can help you today. Unfortunately, phentermine is a medication that is associated with an increased risk of birth defects with exposure in early pregnancy. It is considered a medication that is in pregnancy category X which means we absolutely tell women to avoid during pregnancy and recommend a woman not become pregnant while taking this medication. However, if the pregnancy is so early that a fetus is not yet developed, there is a possibility that the fetus will not be affected. The only thing that can be done at this point is to see an OB/GYN for the pregnancy and confirm the gestational age of the fetus. If the fetus was exposed the majority of the first trimester, there is a high risk of congenital abnormalities. Ultrasound scans can be performed later to screen for malformations, but these will not probably be visible until at least 15 weeks. Regarding laser hair removal, fortunately this does not have any effect on the developing pregnancy, though your skin becomes more sensitive when you re pregnant so I would avoid it. So in summary, I recommend you get evaluation by an OB/GYN as soon as you can. Then you will be able to find out the accurate dating for your pregnancy as well as the potential prognosis depending upon the amount of time that the fetus was exposed. In the meantime, stop drinking alcohol, begin taking prenatal vitamins, and keep a well-balanced diet, drink lots of water, and get an adequate amount of rest. Best wishes for the rest of the pregnancy and good luck, Dr. Brown