I'll preface this by saying that I know my thoughts were completely irrational, but I'm sure there are plenty of others hiding out there who have the same kind of irrational worries about various things, so maybe you won't feel so alone now. Or not, and it's just my OCD acting up again ;)
Last night I went to a concert (NOFX - any other punk rock mamas out there?). It's been a long time since I've been to a good show, so I didn't really think anything of it. The opening act had started by the time we got there, and as soon as we were closer to the music I started to get all antsy because of the noise and the floor vibrations. I was briefly convinced that I was going to damage the embryo because my uterus would vibrate and it would somehow detach (I'm embarrassed to even type that!). I spent a good 10 minutes googling about it and finally managed to talk myself down from the ledge.
I thought the anxiety during the second pregnancy would be easier...
The worst part was that the show didn't end until midnight. I felt like an old lady leaning against the wall stifling yawns!