It'd be possible that a new onset of diabetes cause palpitations and or chest pain?

No but indirectly: It can. See your dr and get checked for clogged heart arteries, irregular heart beat, overactive thyroid gland etc. Try your best to be compliant with diet , exercise, medicatios and attaining ideal body weight. Quit smoking if u do. Take care! http://www.Holisticonline.Com/remedies/diabetes/diabetes_herbs.Htm.

Have it evaluated: A person with chest pain needs to be evaluated and treated appropriately. Multiple possible causes may be: heart attack, esophageal reflux, anxiety, musculoskeletal, pneumonia, pulmonary embolus, and aortic dissection. Have it evaluated right away to prevent potential serious complications.