I Have Upper Left Back Pain But My Back Isn't

I have upper left back pain but my back isn't sore if i get someone to press it. When I am in bed it's most sore when I try to get up in the morning. Also conincidentally I have been slightly breathless over the past few days and hope it isn't related. What do think caused this and do you have any tips for making it easier to manage in my job as a chef?

Thanks