@Scrbblchick -- Two trips to the vampires. Sounds like fun. It's worth mentioning that, while taking that aspirin may be a good idea if you're having blood drawn, you will probably have to stop it if you're having any kind of surgery.
I had outpatient surgery a couple of years ago. I've been on a baby aspirin regimen for years, but my doctor told me to stop about a week before the surgery so they wouldn't have any bleeding problems. I did and everything was all right. My blood clotted fine and I was OK.
I think the whole problem is that in healthy people, the natural state is for the blood to stay inside the body, and the body does everything possible to make that happen.