ever since I've arrived in Seattle my left shoulder has been causing me a ton of pain. really bad pain. the only thing I can think of that might have caused it is my h1n1 flu shot which I got at the airport on my upper left arm and so I wonder if this is a bad side effect. I'm going to check with the doctor as soon as I get back to sf tomorrow and hopefully be able to figure it out soon and fix the problem. it sucks it hurts so much