A little hidden pain in the belly at 7 weeks of pregnancy is usually due to the enlargement of the uterus, but it cannot be ruled out that it is caused by ectopic pregnancy, pre-eclampsia and other factors, the specific causes and treatments are as follows: 1, the uterus increases: after 7 weeks of pregnancy, the uterus will increase with the growth of the fetus, in this process, due to the increase of the uterus, the pulling of the surrounding muscle fibers, there is a slight abdominal pain, which is a normal phenomenon, no special treatment is needed, pay attention to It is normal, no special treatment is needed, just pay attention to rest and regular maternity checkups; 2. Ectopic pregnancy: if you have obvious stomach pain with irregular bleeding at 7 weeks of pregnancy, you need to seek immediate medical examination. If it is found that there is no gestational sac tissue in the uterus, but gestational sac-like tissue is seen outside the uterus, the pregnancy is ectopic and needs to be terminated immediately, and depending on the amount of intra-abdominal bleeding and the patient’s requirements for fertility, tubectomy or tubal preservation surgery should be decided; 3. miscarriage, after rest and treatment, the symptoms are relieved, then the pregnancy can continue. In early pregnancy, pregnant women should pay attention to rest, do not engage in strenuous exercise or heavy physical labor, keep a happy mood, and if necessary, carry out fetal preservation treatment.