The vague pain in the stomach when you are 30 days pregnant is caused by the new pregnancy, which is usually due to the fertilization of the egg, so this is a normal physiological phenomenon, which is nothing to worry about, and can be relieved with proper rest at this time. However, if there is vaginal bleeding or if the pain in the stomach continues to increase, it is not normal. Since the 30 days of pregnancy are relatively short, attention must be paid to exclude the possibility of ectopic pregnancy. If you experience tearing pain in the lower abdomen or anal swelling, you must go to the hospital in time to avoid rupture of ectopic pregnancy. As the pregnancy week increases, the hidden pain in the abdomen will be relieved gradually when the gestational sac gradually increases in size. In early pregnancy, you should pay attention to proper supplementation of trace elements and folic acid, not to have sexual intercourse, pay more attention to rest and not to strain, and also to prevent constipation.