Anna mate, I actually lift up my top sometimes expecting to see bruises! Little psycho in here might just be taking after dad with the drumming (or mum with the hyperactivity )

And when it's not arms and legs, I think I know what you mean, like a roll that seems to stretch more than ususal?
Or perhaps (my midwife suggested this might happen), the baby responds to a Braxton Hicks, so it's moving while your muscles are tensing, which I guess would hurt a bit more.

I wouldn't know, all my tummy feels at the moment is super sunburnt - I honestly don't know how much more we can stretch!!