Stabbing pain in the stomach for a few seconds in early pregnancy may be due to mental tension, uterine enlargement pulling ligaments, and preeclampsia. 1. Mental tension: If you are overly nervous in early pregnancy, when the pressure is high, it will stimulate the motor nerves and muscle contractions will occur, which will have the symptom of stabbing pain for a few seconds. 2. Uterine enlargement pull ligaments: the embryo in the uterus gradually grows, the size of the uterus will also become larger, larger in the process of pulling to the local ligaments to appear tingling symptoms, but the symptoms are generally not particularly obvious, may be manifested as a tingling for a few seconds. 3. Pre-eclampsia: chromosomal abnormalities, female endocrine disorders or when subjected to some stressful stimuli, the fetus will develop abnormally or abortion, usually accompanied by vaginal bleeding, abdominal pain continues to worsen. Women are advised to relax and avoid too much stress in early pregnancy, pay attention to the changes in the body, and if there is any abnormality, it is recommended to actively seek medical attention.