right and left side upper abdominal pain

hi i am a 21 year old female, a few weeks ago i suffered from upper right and left side abdominal pain the pain begins on the right and has moved to the left, which subsided after a few days, i felt nauseous but never vomit, now it has reoccurred along with a viral infection in my throat. can anyone help?. Three years ago i was admitted to hospital with suspected appendicitis, i didnt have diahorrea just vomited and pain, i was told i had an infection and sent home with paracetemol, every now and then the pain re-emerges then subsides again. what should i do?????

my daughter was 18 with close to the same symptoms for months-- fiannly after eating greasy fried chicken-- severe pain in one spot on her upper right side-- and it was diagnosed as gallbladder-- whioch was removed then-- it did not show on any tests as it had been fuse dot her liver-- they didnt know until they were in her--- she had mono a few months prior-- the docotrs make all sorts of diagnosis-- nothing was right---