Thanks for your query.
The pain in the abdomen on sitting or standing without any ab work indicates that there is sprain of the muscles which you do not remember. Another possibility is that there s an inflammatory process going on in the abdomen like inflamed lymph node mass, appendicitis and so on.
For this reason it is imperative that you be seen by a General Surgeon for clinical examination and relevant examinations
Proper diagnosis alone can help you to get a proper treatment.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.