I'm going private, and my first scan was around 9 weeks, when i lost mine i found out at the dating scan and had to have a D&C. With this one they checked me from about 6 weeks..think i had 3 scans before 12 weeks because i had various issues, bleeding and worries....

With my DD who is 21/2, i had no fluid and she was actually induced 3 weeks early, because we didnt realise beforehand and on the day of the scan he panicked...this time i have been concerned about having the same thing happen and he said he would keep an eye on me but so far i havent had anything out the ordinary. Im going to ask this appointment though with the midwives, i know she said if he was concerned he would do some scans closer to the birth to make sure everything was ok and keep an eye on my fluid level.

I think if you are high risk case, and have various issues the ob will do more scans for you and keep an eye on things. Im not sure if you can just ask for more scans if the ob doesnt offer them?