Thank you for your query. Sometimes, spleen
(a vascular organ in the left of the stomach) may become enlarged and result in a dragging or crawling sensation like yours. This can enlarge due to various causes like some infection (kala azar
, certain fungal infections etc), certain blood disorders (like leukemia
etc) or some autoimmune condition.
If I would have seen a patient with your complaints, I would have suggested an Ultrasound of the abdomen to find out the definite condition, and manage accordingly.
I would suggest you to consult an Internal medicine specialist for a thorough diagnosis and management of your condition.
Hope I've been able to satisfy your query. If you have any further clarifications, please don't hesitate to ask me. Best of luck.