Ellen is а 46 y.о mаrried femаle whо is starting tо have heavy, irregular menses. Her husband has had a vasectomy. She is asking the nurse practitioner what she could possibly do to regulate her menses. She does not smoke and has no medical problems. She recently had routine labs at her PCP's office - all WNL. Her BP today is 118/76. What would be a good choice for her?