if your not sure if you had your yr 10 vaccination (ie measles etc) then ask the GP to do a blood test for rubella, they cant test for measles or mumps apparently. That reminds me I should go back to the doc to get the test results to tell work hehe.
If you need the ones when you were very young, ring up medicare, otherwise ring up all the docs that you went to to get the shots and your school.