Hashimoto’s thyroiditis may affect fertility. Hashimoto’s thyroiditis is an autoimmune disease. Most patients with Hashimoto’s thyroiditis have changes in thyroid function, with mild hyperthyroidism early in the course of the disease and hypothyroidism later in the course of the disease. When patients with Hashimoto’s thyroiditis develop hypothyroidism, they may experience chills, fatigue, swelling of the hands and feet, drowsiness, memory loss, low sweating, joint pain, weight gain, constipation, menstrual disorders in females, or excessive menstruation, and infertility, so Hashimoto’s thyroiditis may affect fertility. Patients with Hashimoto’s thyroiditis should follow the doctor’s instructions to avoid delays.