So (ignoring unicode for the moment) you can send a message of 35 * 153 = 5355 characters via the Clickatell API. If you are sending unicode characters (which the OP is not) the character count for a single message is 70, reduced by 7 characters for each segment in concatenated message or 63 * 35 = 2205 unicode characters.
Lung-related causes. Many lung disorders can cause chest pain, including: 1  Pulmonary embolism. 2  This cause of chest pain occurs when a blood clot becomes lodged in a lung (pulmonary) artery, blocking blood flow to lung tissue. 3  Pleurisy.
Chest pain can be caused by many diseases and condition, for example,angina, heart attack, shingles, pneumonia, pulmonary embolism, pericarditis, GERD, broken or bruised ribs, and aortic dissection. The treatment for chest pain depends upon the cause. If you have pain in the chest, see your doctor or other healthcare professional.