The main symptom of pelvic inflammatory disease during pregnancy is pain in the lower abdomen. If the inflammation is mild, mild abdominal pain will occur. If the inflammation is more serious, there will be more serious lower abdominal pain, and there may be a feeling of anal swelling or a little vaginal bleeding. In this case, you need to go to the hospital in time, and the doctor can do a pelvic ultrasound examination to rule out whether the abdominal pain is caused by uterine contraction. If uterine pain is ruled out, pelvic inflammatory disease can be considered. In this case, oral anti-inflammatory drugs such as cephalosporin can be taken, which is relatively safe during pregnancy. These drugs do not affect the growth and development of the fetus. Give active anti-inflammatory and symptomatic treatment, and the pain will gradually decrease and disappear.