Normal result not convinced

Four years ago I had CIN 1-2 - was given LLETZ but results came back as mild changes remaining, but was put back to 3-year smears. Fast forward to this August, I went for my smear - got the results today saying, Normal and very low risk of cancer at this time. I’m worried though, has the CIN really gone ?? I know I should feel relieved but I’m still scared.