I have a painful burning sensation through my upper back, upper and lower abdomen and sometimes down into where my ovaries are, the pain worsens at night and after I eat... My breasts are always tender and my nipples are always purple, I'm over 50 and not pregnant.... I feel a sharp sensation in my middle back, right side everyday.... Blood tests, urine and stool samples have all been negative.... I don't know what to do I've been like this for over a year... All tests keep coming back as ok.... I'm very anxious because I know there is something wrong....!