Pregnant women who take amoxicillin in the early stages of pregnancy usually have no effect. If there is an effect or the embryo development is abnormal, there will be very early miscarriage, so you can not force the birth control, observe the embryo development can be. The use of drugs for pregnant women should be a principle, there should be clear indications, to avoid unnecessary use of drugs, and must be used under the guidance of a doctor, do not use drugs without authorization. The harm of drugs to the fetus is divided into five levels, amoxicillin belongs to the penicillin class, belongs to the class b. Class b drugs have not been seen to be harmful to the fetus by animal testing studies, there is no clinical control test, no evidence of harmfulness has been obtained, and they can be used under the observation of a physician. So taking amoxicillin in the early stages of pregnancy generally has little effect, while if there is an embryo miscarriage or redness, it is best to let nature take its course.