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Greetings,Thank you for your question.I am Dr. Su S.I will try my best to help you.
Does she have cough, fever or any other symptom?
Is there any tenderness?
Did she take any medicine?
Thank you for the input.There can be a muscular pain like muscle strain or pull.This can occur from coughing.You can give her tylenol or motrin.Warm application can help.Sometimes other issues like lung or pleural infection can cause referred pain below.Kidney infection can also cause pain here.If you do not see any improvement, I would suggest to get her an examination by doctor.I hope this information will be helpful.If you have any query, please feel free to ask.If you are happy with my answer please click on the Excellent/Good rating. Wish her healthy life.Regards.