When did you notices changes?

I still look exactly the same from pre pregnancy.....I'm 5'3" and 136 pounds and have only gained half a pound so far....I hardly have/had any symptoms at all. When did you start noticing changes? Have your breasts increased size? I'm a 32A so I think I would notice once those start to change lol. All I have is a tiny "pudge....I don't even feel pregnant until I see my sweet baby on the ultrasound screen....is this normal?