At the end of August, at 12 weeks and 2 days we had our 12 week scan. The purpose of a 12 week ultrasound is routine screening to check the baby is developing normally. Together with a maternal trimester 1 blood screen, the scan is used to assess the risk of chromosomal abnormalities such as Down Syndrome (trisomy 21), trisomy 13, and trisomy 18.
The sonographer had a little difficulty getting a clear view of the baby, saying it was quite deep in my abdomen. After positioning and re-positioning the probe, we managed to get a few grainy views where he was able to take some measurements including length (61mm), heart rate (150bpm) and checked the position of the placenta. During this time, the baby was very active - more so than I knew they could be at this age. They kept moving up and down like they were swimming, wiggling about like a little fish! They were also on a slight angle, which meant that the sonographer couldn't take one key measurement - the nuchal translucency. This a a measurement of a fluid pocket at the back of the baby's neck, and is one of the factors used to assess the risk of Down Syndrome. After asking me to repeatedly move positions and get up and walk around to try and move the baby (unsuccessfully) they rescheduled us for a follow up scan the next week.
The day before my next scan I had my next midwife appointment. They asked how I was doing, checked my blood pressure and we were able to hear the baby's heartbeat through a doppler (151bpm). They also conducted a urine test to make sure I wasn't passing an excess of protein or glucose, which can be indicative of health issues. Everything checked out as normal, and my next midwife appointment is to be at 17 weeks.
At the follow up ultrasound at 13 weeks and 3 days, the sonographer was able to find the baby more easily and images were much clearer - but this time the baby was upside down! After repositioning the probe a few times, they managed to get a clear view and were able to skillfully take the nuchal translucency measurements upside down. At 1.9mm the measurement was well within the normal range - anything less than 3mm is no cause for concern. Our next scan is to be at 20 weeks.
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| Stock image of 13 week old foetus. Ours looked more-or-less like an upside-down version of this. From: https://www.sciencephoto.com/media/79609/view |
When the risk assessment results came in from the scan and blood test, they reported that the chance of Down Syndrome is 1 in 4500; trisomy 13 1 in 100 000, and trisomy 18 1 in 100 000. The reference given for all of these was that the cutoff is 300 - so a chance of 1 in 300 or greater would indicate high risk. The analysis concluded that there is a low chance of our baby having any of these conditions. (the chance of Down Syndrome is only higher because it is a more common condition than the other two, these results are well within the range of normal and low-risk).
At 10 weeks, I was able to wean off both my Progynova and Utrogestan over 4 days. At 12 weeks, folic acid supplements are no longer necessary. The only thing I am currently taking is the daily iodine supplement. After consistently feeling pretty sick up until around 13 weeks, I am now mostly feeling a lot better, with the odd period of nausea becoming less frequent. I'm still generally exhausted, but I've had my busiest couple of months work/study wise, and should be able to get some more rest soon which will hopefully help. In the meantime, we will look forward to our next scan.




