hi about 4 weeks ago i experienced severe chest pressure that radiated to my left shoulder after a minute or so. i was driving home from my sisters house. about 5 minutes after the pain started i began vomiting. the pain began to ease after about an hour but remained in my shoulder for a few hours. a little history: my father had a stroke at 40, i have diabetes (on metformin), have svt and afib and castlemans disease. i didnt put together what was happening at the time, but experienced chest tightness going up the stairs this weekend and now im wondering if this sounds like a heart attack and if it is ok to wait until friday to see my dr.