I was gardening, (lots of bending and lifting, shoveling) and suddenly experienced dull pain under ribs on right side....I thought maybe pulled muscle, but it was more in stomach area and floated around. I have been working on my computer since and just got up and pain is now in back. Any thoughts? I am 78 but in excellent health, vegan, esmonde-white exercises, non drinker since 84 and not on any medication. Thanks for your help...Pat