For Rimegepant exposed cohort:  Inclusion Criteria:  Migraine diagnosis any time prior to the estimated last menstrual period (LMP) or during pregnancy At least one pharmacy dispensing for rimegepant within the defined pre-pregnancy time before the estimated LMP or any time during pregnancy  Exclusion Criteria:  Insufficient information to estimate the LMP Certain migraine medications (e.g., Reyvow®, Ubrelvy®, Aimovig®, Ajovy®, Emgality®, Qulipta™, or Vyepti®) prior to or during pregnancy may be exclusionary  Rimegepant unexposed pregnant women with migraine cohort:  Inclusion Criteria:  Migraine diagnosis any time prior to the estimated LMP or during pregnancy At least one pharmacy dispensing for a medication indicated for the treatment of migraine within the defined pre pregnancy time before the estimated LMP  Exclusion Criteria:  - Certain migraine medications (e.g., Reyvow®, Ubrelvy®, Aimovig®, Ajovy®, Emgality®, Qulipta™, or Vyepti®) prior to or during pregnancy may be exclusionary  Rimegepant unexposed pregnant women without migraine cohort:  Inclusion Criteria:  - Age 18 to 55 years, inclusive, at the estimated LMP  Exclusion Criteria:  Migraine diagnosis any time prior to the estimated LMP or during pregnancy Certain migraine medications (e.g., Reyvow®, Ubrelvy®, Aimovig®, Ajovy®, Emgality®, Qulipta™, or Vyepti®) prior to or during pregnancy may be exclusionary