Hi 53 Year Old Female Breast And Abdomen Swollen With

Hi 53 year old female breast and abdomen swollen with pain a discomfort worse when sitting better standing sharpest pain center just below breast. has happen on and off past 2 weeks today swelling has been all day pain eases with standing. went to pcp thursday said stomach was tender caused me to jump pushed on prescribed Prilosec.
Thank You
Jeannine