That morning was a Saturday, and she was due to take the train out of town to visit her old folks in the countryside. She had really hoped that she would have started her period by then. "I say!" she exclaimed to her husband, "I don't suppose I could be pregnant could I?"
Her husband, who had seen this carry on before, shrugged unhelpfully and suggested she took a pregnancy test.
"Jolly good idea!" said Liz, as though this was a novel idea (when in actual fact that was exactly what she planned to do any way).
The mystery had started months earlier when she had discovered that following the removal of the coil, her periods had started up again and been more regular than they had been for the whole of her adult life.
This had lulled Liz in a false sense of security, believing that her period would continue to arrive on, or around, the appointed day. She was so complacent nowadays that this month, for the first in many, she hadn't even bothered to check to see when she had ovulated. Besides, she had managed to convince herself, I'll be having IVF next month so it doesn't really matter when I ovulate now, I'm clearly not going to get pregnant by myself.
But now she was flumoxed.
All the clues pointed towards an imminent period; she had frightful stomach cramps, sore breasts and was feeling incredibly lethargic. "Here it comes," she thought grimly.
But the pregnancy test did nothing to resolve the situation, giving no indication of a pregnancy. But neither did it do its normal trick of bringing Liz's period on either.
"This is a queer thing" thought Liz, but she decided against doing another pregnancy test for a few more days. "Good things come to those who wait," she consoled herself.
All the time she was away she would nervously check and double check that her period hadn't arrived. But the weekend away proved uneventful and her hosts' sheets remained unstained.
Monday and Tuesday also came and went but still nothing other than continued cramps.
"I shall test again on Thursday" she resolved. "By then surely the test will be conclusive."
Secretly she had begun to hope that maybe, just maybe, she had managed to get pregnant.
But on Wednesday the inevitable happened. Her period did start.
"Better late than never," she said unconvincingly.
(With apologies to Enid Blyton)