Have been diagnosed with cad in small vessels. Have had arm ache on off for several weeks, very vague. Woke last night because of pain in left arm, took gtn twice. 9am same again, accompanied by severe chest pain. Felt unwell and exhausted the rest of the day. Every time l move the pain returns, but milder. Is it angina or indigestion. Also taking gaviscon. History of unstable angina, hypertension, gord, diabetes2, not sure what to do. My arm feels sore on the inside, this is unusual for me.