Just be armed with any information that may be relevant - So maybe make a few notes before hand. They will want to know things like cycle length, past or present gynae history such as PCOS, abnormal smears any past problems with excessive or unexplained PV bleeds etc....They may even want to know about family medical history. For example if your Mother has a problem with her Thyroid, that would be relevant because it can be genetic and affect fertility.
-They will usually ask when you had your last PAP/smear and what the result is.
Basically any medical history that may be relevant and dates where possible.
Good luck!