Warfarin is contraindicated during pregnancy
The highest daily risk of VTE is during the postpartum period
DVT
90% occur in the left leg
Pulmonary embolism in pregnancy
Most common cause of maternal death in the developed world
If suspect and lower extremity ultrasound shows DVT,  treat empirically for PE
If suspect and lower extremity ultrasound is negative obtain CT chest
Risk to fetus of childhood cancer from single scan is <1 case per million
90% occur in the left leg
Most common cause of maternal death in the developed world
If suspect and lower extremity ultrasound shows DVT,  treat empirically for PE
If suspect and lower extremity ultrasound is negative obtain CT chest
Risk to fetus of childhood cancer from single scan is <1 case per million
Risk to fetus of childhood cancer from single scan is <1 case per million
Comorbid diseases in pregnancy
Abdominal pain in pregnancy
Vaginal bleeding in pregnancy 
Intrauterine device complications
First trimester abortion
Trauma in pregnancy
Pregnancy 
Preeclampsia