When I lie on my back, my chest hurts. Sometimes in my back and sometimes in the front. It’s a dull achy pain that subsides when I sit up. This has been happening for about 3 weeks. I saw my doctor Monday for a regular Medicare checkup and I told him about it. He made note of it and did a lot of bloodwork. I told him my symptoms were so vague that I hated to even mention it but it seems to be getting worse.