Hello Sir/Madam, My wife is 26 years old & she is on 9 months of pregnancy now. Last time she had done ultrasound on 15. 09. 2016 i.e. Just 3 days before. But anyhow we are not convinced about the report for which we want to do ultrasound once again in another hospital for confirmation. We want to do this on or before 24. 09. 2016. Is it safe to do so in such a short period of time? If no, then how many minimum days gap need to be maintained for another ultrasound. Please suggest.