Went for Oscar scan yterday also. Bb was naughty, refuse to lie down n even use hand o cover his nose. End up completed my Oscar scan in 3hrs and in 4 scans. Almost desperate. First two scans, bb was facing sonographer. Sonographer said bb sleeping, shake my womb also don't want to wake up. Asked me to go for lunch first. After lunch, bb was upside down, head downwards, and again hide face away from sonographer. Then last attempt, sonographer made me turn sideways, prop my tummy n voila, finally, bb wave hands n reveal his nose for sonographer to take nasal bone.
For those who doing Oscar, do look forward to it. Heard bb's heartbeat, saw the hands, fingers, spine, nose, mouth, etc n bb waving hands. Quite amazing!