I was carrying very heavy bags over the course of 3 days a week ago and I thought my back pain was caused by that but tonight I reached back to where my pain was coming from on my right flank side on my back and there is a very large painful mass that makes me want to throw up when I press it. My back actually feels swollen and throbs.
Hello and Welcome to Chat Doctor, Thanks for writing to us. Pain and swilling over right flank could be muscular in origin or due to liver, ureter, intestine or renal in origin. As it is tender (painful to touch), there is chance of infection of these. So I suggest you to get it evaluated by a physician and definitive treatment according to that. Hope this helps you. Wishing you good health... Regards.  Chat Doctor. Orthopedic Surgeon.