It is common for pregnant women to experience pain under the abdomen at 24 weeks. This discomfort can be caused by various factors such as round ligament pain, Braxton Hicks contractions, or stretching of the uterus. To manage and alleviate this discomfort, you can try practicing good posture, wearing supportive maternity clothing, using a pregnancy pillow for better sleep, engaging in gentle exercises approved by your healthcare provider, applying heat or cold packs to the affected area, taking warm baths or showers for relaxation, practicing deep breathing techniques or prenatal yoga for stress relief. However, if the pain becomes severe or is accompanied by other symptoms like bleeding or fever, it is important to consult your healthcare provider immediately as it could indicate a more serious condition. They will be able to provide you with appropriate guidance and ensure both your safety and that of your baby.