broke my 3lb bubble

since I found out I was pregnant I've been weighing myself. and basically I've just been going up and down, up and down, all w/in a little 0-3 lb range. but today the last digits on the scale were 4.5 s0 I busted through that 3 lb range by 1.5 lbs! I'm sure my weight will continue to fluctuate and I may well be back in that 3 lb range tomorrow but... it has begun! (crazy!)