Taking medicine for diarrhea without knowing you are pregnant may affect fetal development and can lead to fetal malformation in severe cases, the severity of the effect on the fetus is not easy to determine. If you want to keep the fetus you need to go to the hospital for regular maternity checkups. It is recommended to go to the hospital around 13 weeks of pregnancy for ultrasound to check the subcutaneous transparency of the neck, to do Down’s syndrome screening during 16-20 weeks of pregnancy and also to have a 4D ultrasound around 24 weeks of pregnancy. If the fetus develops normally during intrauterine delivery, you can continue the pregnancy and do not worry too much. If the fetus is abnormal through the maternal examination, it needs to be aborted or induced in time, which is very harmful to the body.