What would cause really painful gas and widespread chest pain when the food goes down after i swallow? feels like the pain when something is stuck in your throat?

Your symptoms are consistent with esophageal spasm. If these symptoms rarely occur then you do not need to worry but you should make a diary what kind of foods you eat when the spasm occurs in order to track down a correlation, just in case. However, if these symptoms occur quite often and mess up your daily life, you should be evaluated by a gastroenterologist.