1st pregnancy wonders

Ellen
Hey girls ! Jut want abit of advice really, I'm 4 weeks and 6 days, so not really that far and I have noticed a few things ... 
I'm getting what I can only describe as big butterfly's or twitches maybe in my abdomen area, is this normal as I'm not that far along? Also I seem to constantly need a wee just like I would when I have a water infection (but no water infection pain) 
Is this all normal ?