I wonder if anyone can throw any light on this one for me. I have several criteria that would be strong indicators for lupus but no diagnosis as yet. My chest has felt tight for ages, as if I cannot fill my lungs fully. When I lie down it feels like there is a heavy rock in the centre of my chest. As xray has been normal, the GP thinks it's anxiety but this doesn't make sense to me as it's a constant and doesn't just happen when I'm stressed. I am a calm person and have been through more stressful events without this tight chest. Any clues ?