More than two months of pregnancy back pain may be insufficient qi and blood or poor physical condition, may also be the uterus enlargement so that the patient some discomfort, usually try to choose bed rest, it is best not to have sex. In the case of physical strength, you can go outdoors to walk, do slow walking training, not only can make the mood happy and can enhance physical fitness, will also have a certain degree of help to the birth of the patient, the patient contact with cold water or cold when pregnant will also trigger back pain, must not contact with cold water during pregnancy, not to mention the cold, and usually try to wash with lukewarm water. If the patient is indoors for a long time, we should pay attention to maintain indoor ventilation, the air does not circulate will also cause discomfort to pregnant women, but also cause chest tightness and shortness of breath phenomenon.