That sucks.
Just to make you feel a leetle better though, perhaps, my grandmother was on coumadin for the last 20-25 years of her life, at least, due to heart issues. Once she got the dosage adjusted, the biggest annoyance was having to go to the dr. to check her levels every three weeks, which she had to plan (and travel) around. Other than that, not many problems, and certainly no ER visits.
She lived until 94. May you do the same!
Emily
2011 Jamis Dakar XC "Toto" - Selle Italia Ldy Gel Flow
2007 Trek Pilot 5.0 WSD "Gloria" - Selle Italia Diva Gel Flow
2004 Bike Friday Petite Pocket Crusoe - Selle Italia Diva Gel Flow