When you are pregnant, address medical concerns immediately, including toothaches. What seems to be just a minor annoyance could turn into an oral infection that can spread throughout your body and to your baby. Do not wait for your next checkup to address oral concerns. Call your dentist right away. The National Maternal and Child Oral Health Policy Center reminds women that it is not uncommon for gums to swell during pregnancy. This can lead to gingivitis and, if not treated, periodontal disease or tooth loss. X-rays, the use of local anesthesia and some pain medications are safe during pregnancy, according to the center, so there is no excuse to avoid prenatal dental care.