When you have type 1 or type 2 diabetes and are planning to become pregnant, your health care team will ask you to begin to lower your glucose (sugar) levels. The goal is an A1C of less than 6.5% (48 mmol/mol) by the time you become pregnant. High blood glucose (sugar) levels once pregnant can harm you and your baby. Pregnant women with diabetes have lower blood glucose (sugar) goals than women who are not pregnant.