Most toothaches after pregnancy are due to inflammatory lesions in the periodontium. After the inflammation appears, it leads to the weakening of the resistance to inherent bacterial microorganisms in the oral cavity. If these bacteria enter the blood of pregnant women and then enter the fetus through the placental barrier, it will affect the normal development of the fetus, which can lead to fetal malformation and miscarriage in serious cases, although the possibility of causing fetal intellectual disability is extremely low. If women consume too much spicy food and do not pay attention to oral hygiene, wisdom tooth infection, periapical infection and pulpitis are more likely to occur. If you are a female patient, you can take some antibiotics and painkillers to relieve the symptoms after the symptoms appear. However, there are many contraindications to the use of medication during pregnancy. If you take antibiotics and painkillers on your own to solve a temporary toothache, these medications are likely to affect the health of the fetus and can cause fetal malformation and miscarriage in serious cases. Therefore, if you have a toothache after pregnancy, you should not take any medication on your own, but go to a dental specialist to receive professional treatment in time. It is very unlikely that a toothache after pregnancy will cause fetal retardation, but women should pay attention to a light diet and eat more vegetables and fruits after pregnancy to prevent dryness and fire from causing toothache and other discomfort.