Hi Brittany welcome to Health care magic forum.
Thanks for writing to H.C.M.F.
As you describe you have got lower abdominal pain
and tenderness and back pain
since 3 days, Your appendix
removed 3 years back, and an abortion
2 years ago. You have marena still in psition.
It appears to be the pelvic inflamatory disease, urinary tract infection
, or stones in the urinary tract
. If marena is there more than 3 years you may get infection due to it.
I advise you to consult a gynacologist for diagnosis and treatment. You may need to have U.S.scaning besides other routine tests for confirmation.
Wishing for a quick recovery.