BT Yev 65b(3) :דאם איתה דאפיל לא מחזקא נפשה בעקרתא‏ : if it is (the case) that she had been pregnant and miscarried, she would not have allowed herself to be presumed infertile
See the entire entry for ˁaqrū, ˁaqrūṯā n.f. barrenness