If pregnancy is detected after inactivated vaccination, the pregnancy is usually not affected. In the case of an active vaccine, the doctor will assess whether the pregnancy should be terminated. Clinical vaccinations can be broadly categorized into inactivated vaccines and active vaccines, so if you find out you are pregnant after a vaccination, you need to decide what to do according to the actual situation. If the inactivated vaccine is New Crown inactivated vaccine, rabies vaccine, etc., it will not affect the normal pregnancy, and it is recommended to have normal pregnancy checkups and follow up on time. However, if the vaccine received is an active vaccine such as live attenuated B encephalitis vaccine or rubella vaccine, a medical professional is required to evaluate the effects of the vaccine type on the mother and fetus and decide whether the pregnancy should continue. This is mainly because such vaccines may affect pregnancy as they are made to reproduce or replicate to a certain extent by injecting mutated bacteria or viruses into the body. All in all, it is recommended that people who have just received the vaccine and found out that they are pregnant should go to the hospital and consult with a medical professional in a timely manner.