This is a bit of a weird one, but I am 4 and a half weeks and my right breast is swelling up like a water balloon but my left is just like I would normally get a week before AF. When I first hit puberty as a teenager I had issues with one growing before the other but it eventually evened out.
My right is already a cup size bigger and I think it's really noticeable.
Anyone else experienced this? Will the other one catch up?