lmp or first ultrasound?

according to my last missed period i would be 24w3d pregnant. yet according to first ultrasound im 23w3d, 2nd ultrasound 24w0d and last ultrasound 25w0d. so which one do i go by? lmp or ultrasound? and if ultrasound, which one?thanks!

[delanna6two]

 I looked at your numbers and I would just take it all in as approximate or just check back with your drs.

[Pammi86]

I would do with whatever your dr tells you to! : )