In my situation I had no idea what lupus was, I just know I had been extremely sick, to the point I was hosptialized and after many tests, surgeries and the like I was referred to a rheumatologist who dx'd me with the dreaded "lupus" label! When I first began feeling badly, it was like a light switch that was flipped and I was seriously, seriously ill.
I had major heart, chest pains as you are describing, joint pain (horrible, horrible joint pain) severe exhaustion, major migraines, brain fog, sun sensitivity, and the list goes on and on and on. I described my symptoms to the docs and thought "I must have cancer or some kind of horrible virus, but never, ever did I suggest any such diagnosis to my medical team. I think I was better off as a result, they ran test, after test and they came up with the dxs fairly quickly. I really do think that doctors in general question the validity if they are met with a "self diagnosis" and thus they hesitate to take that route. This is simply my opinion, take it for what it's worth, but I personally would not say "I think I have lupus" because they may not take you as serious. Simply go in and provide a list of aliments, then let the medical professional run tests. After the tests are run if you still do not have answers, then perhaps you could (should) mention "could this possibly be lupus?" I don't feel it's as though doctors want the glory of diagnosing you or solving some great mystery, but rather they are more adpt to take your symptoms seriously.
On that note, please remember if at first you don't susceed try, try again. Meaning, it could take several specialist and many months (years) to get a diagnosis and then it still may not be lupus. Please don't get your heart set on a lupus diagnosis, after all the label is not what matters, but that your symptoms are addressed and treated so that you may feel better and live a healthy, happy life.
Best of luck to you on your journey for answers.
Lupus - 1997 Fibro - 2001 Sjorens - 2007 Raynauds - 2008
Plaquenil, Imuran, Prednisone, Synthroid, Topomax, Effexor, Norco, Prilsec, Xanex, Elidel, Restasis