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.
Causes of Similar Symptoms to Chest burning sensation. Research the causes of these symptoms that are similar to, or related to, the symptom Chest burning sensation: 1  Skin burning. 2  Chest pain (1053 causes). 3  Chest itch (15 causes). 4  Tingling skin (53 causes). 5  Chest discomfort (64 causes). 6  Diabetes (212 causes).