Hello recently i have been experiencing left chest pain when i'm breathing in after eating usually and when i'm laying down sometimes a bit of left arm pain but it just feels a bit sore could be from on it when i move my chest to the left it hurts?

Your symptoms are more characteristic of a musculoskeletal cause in the rib cage or pinched intercostal nerve that runs between 2 ribs. Other causes such as heart,lung or esophageal causes are quite unlikely. Could you have strained or injured your rib cage recently? Any tender spots? If symptoms don't resolve see your physician for evaluation and any appropriate testing.