In some of my eggs I never managed to catch them moving, and in most it was pretty subtle, like a little twitch or gentle shift in position (which was hard to distingush from my shakey hhands moving the light). You should be seeing patterns soon, but that won't be obvious if you hit the albinos.

If it were me, I'd keep trying with the boob egg until you're absolutely certain there's no hope (and veins = hope).