Sonogram before Clomid

Amanda 🐼 β€’ With my husband for 19 years, married 10 πŸ’ Postpartum RN πŸ’‰ Addison Sarah born 1/1/16 πŸŽ€ Lost baby #2 10/1/18 πŸ‘ΌπŸ»
Did anyone else have to go in for a sonogram before starting Clomid for the first cycle? My doc told me to call him when AF came, to schedule a sono. He hadn't even given me the prescription yet. And if yes, what is that sonogram for?