Is it possible for a groin hernia to send pain down your thigh or could this be a lymph node. do they send pain down from groin to thigh?

Absolutely.: Yes, groin hernias can cause a variety of pain syndromes, one of which could be a pain that goes from the groin down the inside of the thigh. There are many nerves in the area of a groin hernia, one in particular being the iliofemoral nerve, which provides sensation to the inside thigh. Discuss with a board certified general surgeon about repair.