I still get paranoid too. I felt so comforted after my 16 week appointment when I heard the nice strong heartbeat, and then just a couple days later, I kind-of jumped onto this counter (hard to describe in writing-- you know when you put your hands down and then use them to jump up, then swing around to sit?) and hit my belly. It wasn't even that hard, but golly was I worried I had done something to the bambino. I have since felt some little kicks, but even that isn't surefire reassurance. I'll feel movement one day, then not for three days, then feel it again for a couple days in a row. I'm anxious for when we get everyday, consistent kicks.
I love those! It's not keep-me-up-at-night type worrying, but enough that it crosses my mind. As I recall, I did the same stuff with dd-- I especially remember being worried the day of her u/s and feeling so relieved when everything looked ok. Maybe it's just par for the course.
In other news, I weighed myself last night and holy moly! I've really gained weight! Not quite two weeks ago, I weighed 157.5 and yesterday I weighed 163.5-- 6 lbs.! Gaining weight is usually really tough for me usually (when pg, not the rest of the time!), and I don't even feel like I've been eating very much or anything (healthier stuff if anything). I've also gotten noticeably bigger in the belly in the past couple days-- enough that people at work have commented. This renews my twin paranoia.
But when I feel kicks, it's always the same spot, so I think I'm ok.
(Disclaimer: I think twins are fabulous and awfully interesting and I always wanted them-- until I got pregnant this time around, and now the thought *terrifies* me.)
On that note, I asked dd last night how many babies were in my belly, 1 or 2? She said "2! ... 3, 4, 5, 6..." and counted all the way to 46. So I'm thinking maybe she doesn't hold all the answers after all. Either that or all my attempts an anonymity are going to be blown when y'all turn on the news and see the story about the poor soul who just gave birth to 11 or so sets of quadruplets. :LOL