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Hello this is Dr. Salama MD,
Yes, please go to the ER ASAP.
You will need a Chest X ray to evaluate your sternum and determine whether or not any of your ribs have been fractured as well.
I am concerned about your breathing and the severity of your symptoms.
It is possible that a rib could fracture and puncture your lung which is a much more serious issue that can be easily ruled out.
Let me know if you have any other questions.
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