Thanks for posting your query.
Do you have some abscess
in right upper limb?
Presence of normal ultrasound
suggest least possibility of breast pathology.
Shoulder dislocation is not associated with small lymph
node enlargement in right arm pit.
Dislocation of ribs is not possible.
There may also be possibility of boil formation in hair follicles in armpit.
You should consult with internal medicine specialist and should go for thorough check up.
You should also keep watch on the progress of small nodules.
You should take antibiotics for complete recovery if it appears to be infectious.
Dr. Mayank Bhargava