Stomach pain like menstrual cramps in 6 weeks of pregnancy is considered to be caused by illnesses such as pre-eclampsia, ectopic pregnancy or acute gastroenteritis. If you have a miscarriage, you can take dextroprogesterone under the guidance of a doctor to protect the fetus. For ectopic pregnancy, take methotrexate under doctor’s supervision. Acute gastroenteritis, need to take cephalosporin antibiotics as well as omeprazole enteric-coated tablets under the guidance of a doctor to relieve symptoms. 1. Pre-eclampsia: If you have a stomach ache like menstrual cramps at 6 weeks of pregnancy, and if you have vaginal bleeding at the same time, consider pre-eclampsia. Need to go to the hospital, under the guidance of the doctor to take dextroprogesterone to protect the fetus treatment, luteal insufficiency, as prescribed by the doctor can be daily intramuscular injection of luteinizing hormone; at the same time, to reduce the amount of activity, bed rest, supplemental nutrients. 2. Ectopic pregnancy: When it is clear that the pregnancy is ectopic, it is necessary to take methotrexate treatment under the guidance of the doctor, and during the treatment, it is necessary to check HCG and ultrasound regularly. If abdominal bleeding occurs, vital signs are unstable, and medication is ineffective, laparoscopic surgery is needed. Depending on where the tubal pregnancy occurs and whether it is ruptured or not, tubectomy or conservative surgery will be performed. 3. Acute gastroenteritis: If improper diet causes acute gastroenteritis, it can also lead to stomach pain. Cephalosporin antibiotics and omeprazole enteric-coated tablets should be taken under doctor’s guidance to relieve the symptoms, and intravenous rehydration is needed if the medication fails to relieve the symptoms. At the same time, pay attention to dietary hygiene, do not eat cold, spicy, unclean and spoiled food. During pregnancy, you should follow the doctor’s instructions and take the delivery test on time. If you feel unwell, it is recommended that you go to the hospital in time for examination to clarify the cause of the disease, and then under the guidance of the doctor, treat the symptoms.