Can Warfarin Cause Erection Problems And Bleeding After Erection?

Can Warfarin effect Erections and can it be dangerous or raise the chance of bleeding due to prolonged erection of 20 - 30 min?

Age 59, 5' 10'' 186 lbs. Just had a Pulmonary Embolism 5 weeks ago. Occured 4 days after a Surgery on the stomache. Umbilical Hernia repair.