Yоur next pаtient is а 41 yeаr оld female with a histоry of hypothyroidism, stable on levothyroxine. She smokes 1/2 PPD (pre-contemplative stage of smoking cessation and not interested in quitting at this time), has an occasional alcoholic beverage and denies drug use. Family history is significant for mother with IBS, father with hypothyroidism. No personal or family history of bleeding or clotting disorder, no personal history of VTE. She recently has become sexually active with a new partner and does not desire pregnancy at this time. G1/P1. Menses are regular, q 28 days, lasting 5-7 days with no complaints. She asks about starting birth control. You correctly advise her that: