Was sitting for prolonged time on my computer suddenly a groin pain hit me. Dull ache in groin area and little bit lower abdomen. Bit hurts to walk?

Muscle spasm? It could be a muscle spasm Which would be the most likelyIt can also represent hernia. This would be typically associated with a bulge in the area that is larger with standing and coughing. If severe, or unrelenting, see your primary are doctor for a proper evaluation. Hope this helps!