This type situation is not unknown at all.

https://www.webmd.com/baby/features/can-you-be-pregnant-not-know-it#1

yes it happened here in SD Babies are all doing fine and will be going home real soon

Not a dream,

Here’s the story

There is in fact an entire TV show devoted to this phenomenon: I Didn't Know I was Pregnant

I can understand one baby but come on! Three babies and you didnt feel anything?????? Do you know how big she had to get to have triplets? Wow.

rita, yes: I call it the "voyeur channel".

I cannot imagine being that out of touch with your own body that you do not notice the changes that occur during pregnancy.

FWIW, I didn't find out I was pregnant until I was about 18 weeks along. I had been trying to gain weight and was very happy that my diet seemed to be working, and I was on birth control pills(which obviously failed due to user error), so never noticed a lack of menstruation. I was also in my 20s, so not very savvy either.

Thank goodness my son was born healthy!

P.S. My cousin found she was pretty far along in her pregnancy at age 42. She believed she was no longer fertile and possibly had cancer. How many other late 'surprise' pregnancies have happened like that?

Maybe they were packed in so tight they couldn’t move. ;)

Women who have POS often have irregular periods and find it hard to conceive. It also affects your hormones and many women with it gain weight easily. Since the weight is often put on early in life many women who have this are fat and there seems to be a body type that is common among women who have this problem. Depending on her age any discomfort could be considered gallbladder problems or just because she was fat. I have not seen a picture of her but it seems to go with this problem.

I once had a neighbor who was very obese. She never knew when she was pregnant as her periods were highly irregular and she was already huge. She had 4 children and was bout 5-6 months pregnant with each before figuring it out. She really wasn't stupid - just a bit clueless.

I worked in a ED. It happened several time. We had one baby born in the waiting room toilet. Usually young, first pregnancy and winter time. Sweats hide a lot. Some thought they were gaining weight.
Some mentally convinced themselves that they are not pregnant. Some still denied they had a baby even after delivery. Surprisingly all the babies were born healthy.

The look on the girl's parents faces after given the dx was priceless.