Well, I called my HMO and spoke to my dr.'s nurse. Asked about the d-dimer test. She said they can't give it - that I'd have to go to the ER for those types of blood tests. I've had the chest pain for 4 hours but now it seems to be subsiding. They didn't seem to think that PE was likely but said if I was concerned I should go to the ER. I just don't want to be the one to "cry wolf." Doesn't seem to be an emergency. If my dr isn't concerned...I guess I shouldn't be. They are working on scheduling my stress test.