No. The FemCap comes in three sizes. Your clinician will determine which size you need based on your obstetrical history.
Women who have NEVER been pregnant will use the 22mm FemCap; women who miscarried, had termination (even after two weeks of pregnancy), or had caesarian section will use the 26mm FemCap; women who have had a vaginal delivery will use the 30mm FemCap. If there is a question or doubt of whether you have ever been pregnant, it is best to use the 26mm FemCap.