Excellent post Judith 
The picture reminds me of the scans my wife had when she was expecting our son. I can remember the young lady who was controlling the machine saying… ‘you have to be quick because they swim really fast at that age!’
My wife has had loads of these because she had glandular fever as a child and she now has two plastic heart valves. She can’t sneak up on me.. I can hear her ticking miles away 