Sharp pain below right shoulder blade.

I have been suffering from moderate to severe pain below my right shoulder blade from the past two weeks.I used to rope skipping from the past 45 days.I do not feel any kind of pain when I sit ideally or while walking or running but I feel pain when I rotate my Right hand/shoulder and when I try to rotate my thorax and I also feel pain on the right side of middle back when I deep breath.I have visited Orthopaedician and undergone X rays of L and D spine and the report showed that there are no abnormal findings.The Esr is 11 in the range of 3-5 and CRP is positive.The doctor told me that the spine is little straight and he told me that it is caused by spasms.The doctor gave me antibiotic, NSAID and Ultracet.I feel little relieved when I take those pills.But after three to four hours the pain starts If I rotate my Shoulder Blade or rotate my thoraxI also feel pain on the right side back ribs when I concentrate my weight on that region during my sleep.Can u please help me on this.Thanks