Shaking in sleep

[Lindsey]

For the past three nights, Scott has woken up to me shaking. He didn't tell me until this morning, but in the last two nights I woke up and he was awake and asked how long I'd been awake for. It's been around 4 or 5 in the morning. I don't remember shaking at all. This morning he said it went on for at least 10 minutes before he touched me and i woke up. I'm not having nightmares at all, I'm actually having quite pleasant and funny dreams (last night, Ellen DeGeneres was helping me pack up my bedroom stuff!)Apparently, this has happened before as well.
This morning we looked it up online and everything I find says it's completely normal. It could be sleep apnea, stress, sickness, anything. Right now I am stressed from the big move this weekend, and I'm sick.
Has anyone else experienced this or know what else may be causing it?