I'm having mine on Monday 7/22. I was really scared as well, but the more I found out the less afraid I was. I figured that one of the big reasons I was having WLS was to avoid a stroke or heart attack, and this is doing the exact same thing for us as we undergo the surgery and recovery. At least, that's how I feel. Talk with your doc if you still have concerns after you learn more-that's what he's there for!
Best wishes!
Mimi