Hi, the type of pain described by you is mor
e consistent with a mechanical back pain, where in with movements like changes in posture, coughing and
sneezing the pain is aggravated. Cough and
sneezing cause the muscles to contract as a protective mechanism around the injured part and hence the pain. This is mor
e common with small fractures or
a herniated disc. So, I would advise you to consult your doctor
to rule out the above mentioned conditions. A plain x ray may show up a fracture.