If you have been smoking for 9 months of pregnancy, but the prenatal examination is normal, although there should be no major problems to a certain extent, the normal prenatal examination sometimes cannot completely guarantee that there is no problem, so whether the fetus is completely healthy depends on the situation after the child is born.
Four-dimensional color Doppler ultrasound is generally checked between 22 and 26 weeks. This examination is a real-time examination, which is mainly used to judge whether the fetus is abnormal. If you smoke during pregnancy, but there is no problem with the four-dimensional examination, it generally means that the fetal development is still good and has not been greatly damaged. However, it is still not recommended to smoke during pregnancy, because although there is no problem in the examination now, it is hard to say whether there will be problems after continuing to smoke.
If the child born is healthy, it can only be said that it is very lucky. However, smoking during pregnancy is still very risky, which is scientifically based. Therefore, if you are pregnant, it is recommended to give up smoking as much as possible, otherwise once the child has any problems, it will have an impact on the whole family.