Prenatal App

Nadria
So, today I went in for a. Prenatal appointment. I'm currently 32w3d. My OB measured me and I'm measuring 36cm. I was told today iilll have to have a ultrasound every week until birth. Lately, i had been measuring 2 weeks ahead, but now its 4. At my last appointment I was told I if I continue to measuree big, they my move my DD. Im so confused now. Im wondering is my baby the size of a 36 week utero baby, could I go in labor the next four weeks or WHAT!!!!! Anyone going through this?