Whew! Scary, isn't it? Had a similar experience with DVTs.
The shots aren't so bad, once you get used to them. It's easier to regulate Lovinox and Heparin, coumadin seems to take much longer to get the dosage right. Yep, had them all.
Vitamin K is a natural coagulant, and your doctor may ask you to monitor your intake of leafy greens. I was sent home from the hospital with orders from the nurses for NO leafy greens and my prothrombin times got way too high (60 seconds). I complained to my doc and he said have it, but not too much.
Good luck with the surgery. Glad you caught this early.
Suzanne