stomach problems:

hi shelley , i have written you in the past but i havent for a while simply because my home computer is not working and i am now at the library typing this. i have told you in the past about some stomach problems that i have and it has gotten better. i have found that papaya works wonders for indigestion. i found this out through some herb and vitamin books i have actually from a book i have had for years. i am just curious about something. now my stomach is sensitive to start with and i have noticed repeatedly that if i carry a heavy grocery bag or even a heavy purse or handbag that hangs off the shoulder i seem to pull muscles or something i am not quite sure in the area of the ribs that are pretty much under the breasts and on the side and a little on the back and for some odd reason it seems to set off stomach upsets. no one i know has ever heard of this and i know it is not my imagination. i know that a strain or muscle pull has nothing to do with gastric problems and i dont get it myself. i am hesitant to try any flushes because they sound like they could set off symptoms. have you ever heard of anything like this? or how to treat it naturally? i dont believe in going to doctors. thank you.