The 34th week of pregnancy stomach is always tight to consider is the emergence of false contractions, may also be the emergence of preterm labor, need to actively seek medical attention. 1. False contractions, some pregnant women in the middle and late pregnancy may appear stomach tight symptoms, mainly with the fetal enlargement has a certain relationship, with the gradual increase of the fetus may lead to the uterus abdominal compression, sensitivity increases, so there may be this symptom, generally do not have to treat, usually pay more attention to rest. 2. preterm labor, preterm labor in the middle and late stages of pregnancy may appear after the symptoms of the stomach tight, need to consult a doctor in time to check, if there is a preterm labor, it is recommended to timely preservation of pregnancy treatment, the best preservation of pregnancy to 37 weeks to give birth to, if necessary, it may be necessary to terminate the pregnancy in a timely manner. Regular checkups are needed during pregnancy to avoid abnormal development of the fetus.