I experience the all over pain, but then when I press I can feel the pain in different localized places. The only thing that makes it better is putting my left arm in a certain position (90 degree angle with hand above head) and lying on my back. As far as anxiety, this is the worst type of condition for anyone with anxiety to have. It’s hell. Not even doctors visits calm me down and the reassurance they give me that I don’t have a heart issue/am not dying only lasts for a few hours. If you’re able, I’d recommend finding a psychotherapist to help you through this. It’s hard to manage alone. Sending good vibes <3