question: Hello, We recently learned that my husband had zero sperm in his ejaculate during a recent sperm analysis. The doctor suggested he do blood work and see a Urologist to learn more however a few days later and a week stay in the hospital we learned my husband endured a Pulmonary Embolism. He is now taking Coumadin and working with his doctor to keep this monitored. My questions: is there any correlation between the blood clots and his lack of sperm? Also, does Coumadin have any male fertility/infertility history? Thank you in advance!