Hi
This is my first post, I'm 32 and this is my first pregnancy. I'm just looking for any advice/experiences of others here, as I am totally confused after my 12 week scan.
I had my 12 week scan last Wednesday (2nd Jan), basically because of Christmas/NY etc I ended up being scheduled for the scan when I should have been 12w 6d, however the sonographer noted that I was further along than I thought: 13w 5d (almost at the limit for the scan), and measured the baby at almost 80mm in length.
The baby was moving around and she noted that all looked good, but she had a really hard time getting the baby in the correct position for all of the measurements. I ended up having 3 scans, and she was unable to take the measurements at all for the nuchal translucency as the cord was around the baby's neck. They re-booked me in for the next morning, and so I went back for another scan, it was a different sonographer this one also had trouble with getting the baby into position. Eventually she measured the length at 76mm and noted that I was at 13w 4d.
Eventually when she managed to get the NT, she found it was at 2.8mm: just over 95th percentile, however, a radiographer who had come in to help the intern sonographer said that whilst it was high it wasn't worryingly high. When I got the blood results back a day later I was given a 1:189 risk of trisonomy and was offered a CVS or amnio.
I am booked in for CVS on Tuesday (in 2 days), but now I don't know what to do for the best. At first the shock of seeing that we were in the high risk group made me want the CVS straight away, now after looking through all my notes, I feel almost convinced that there is nothing wrong with the baby: I'm sure I can see a nasal bone (a pretty big one!), they didn't pick up anything wrong with the heart or bowel, and on the PAPP-A test my level is 1.82 - which almost put me off the high end of the bell curve for DS. Unfortunately my bHCG levels came out high too, and I suppose that this + the NT has given me a high reading. But then I have no medical training whatsoever and this is all just the result of 48 hours obsessively looking over all my scans and notes and googling every combination of everything I can think of.
I am still a little worried about the risk of T21 etc and I still want to know one way or the other. I don't know yet what I would do, and would have to make a decision based on more facts about how poorly the baby is (e.g. heart, brain, bowel problems), but it's hard to imagine it being sick when all the scans show a perfect little body. It feels weird to trust blindly a number generated by a computer, without weighting many other variables - like human error in measuring the baby, the fact that both my HCG and PAPP-A were both high, the presence of the nasal bone, the fact that I was at the upper end of the time limit etc.
The last day or so I've been getting myself worked up about the miscarriage risk after a CVS, I would feel so so awful if I miscarried a perfectly healthy baby. I feel like I should take the test and my partner/family all think it's a good idea. But it's agonising not knowing what to do for the best, and I can't really focus on anything else at the minute.
Thanks for reading and thanks for any advice/other points of view.
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Antenatal tests
post-12 week scan confused: CVS or not?
7 replies
Mindboggle · 06/01/2013 09:43
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