bubs measuring ahead

Hey ladies I am currently 39w5d today. I had my last midwife appointment and they measured me. They informed me bubs was measuring 42-43 😳😬 she has been measuring ahead almost the entire pregnancy. I have had an extremely easy pregnant no diabetes no preeclampsia blood pressure has been perfect no swelling no nothing and bubs has stayed healthy through the entire pregnancy with no issues. Has anyone measured this far ahead? What was the outcome of birth did you have to have c-cection or vaginal? I'm a little nervous now that she is measuring so big