Had a scan at 16w3d and 17w5d, both for approx 5-10 minutes. On neither occasion could the "stomach bubble" be seen, which is a black bubble in the stomach where the baby has swallowed some anmiotoc fluid.

All other measurements were normal.

Has anyone else has experience with this? Any advice?

I have been referred to a diagnostic specialist but have to wait for an appointment, so any info appreciated.

Many thanks.