I have soreness under my right collar bone with no swelling but very sore and getting more sore daily. what could this be?

Clavicle pain: Tough to say without an exam and X-ray. Could be arthritis from either end of the clavicle, nerve irritation , thoracic outlet syndrome or some vascular anomaly. If the symptoms have been present more 4 weeks or more get it checked out ASAP. Good luck

It depends: It can be caused by any number of causes. If the pain persists and or there is associated redness or swelling then you must seek medical attention. An X-ray examination of the painful area may reveal the underlying cause. So you should go see your doctor if the pain does not settle down in 1-2 weeks. In the meantime you can take a mild pain pill.as needed