Hooray for positive thought all around! You guys are the best. It's really, really nice to have some other moms to talk to while going through this crazy, queer babymaking process.
After I regained some semblance of composure last evening, I was able to tell turtle to go and google "vagal response" because I realized that might be what was going on--I'd never heard of it until Burt's Girl talked about it a few months ago on one of these threads. She was very reassured by what she read, telling me that I had managed every symptom but passing out, and I was simply not allowed to pass out. And I didn't.
I'm so, so grateful for all of you. I can't even articulate how much.