5 years ago my 3 year old jumped on my chest and hit me with her knee right in the xiphoid process. My dr. did a diagnosis just on physical exam, no treatment. Have always had a lump from it and slight discomfort. For the past month I have had dramatic changes: constant moderate pain, the lump has tripled in size, great deal of pain when I wear a bra, nasuea all the time, accassional vomiting, I have had no other injury and I have not changed my routine in any way. The pain and lump have been increasing gradually, but the pain with my bra and the nausea and vomoting are all sudden changes. My dr. said not to wirry about it and has done nothing but recommend ibuprofen for pain, I need suggestions for who I should see and/or what I should do.Thank you for your time.