I had my first babies, undiagnosed twins, in 72, and my next lot from mid '80s to early '90s. And the differences!
In '72, there was one appointment for ante-natal check-ups. So you turned up, and hoped you were early in the queue, else you were in till (sometimes) after lunch! Thank god that had changed by the next time I was pregnant.
Breastfeeding was not an option. I was just prescribed tablets to dry up my milk, and shown how to mix the formula. Managed the '80s kids just fine.
There were no scans - at least, not for all. Ear trumpets for heartbeat, and hands to guesstimate size. One friend I made in ante-natal had scans cos she was tiny and her baby was huge. Well, until it was born, they thought it was huge... She was 5 foot nothing, weighed as much as a wet dish rag, and her daughter weighed 4 lbs exactly and healthy as fuck.
When the 80s rolled around, and I had stitches (again) I was told not to have salt baths, cos they didn't work. Oh yes they do, I thought, and had them anyway.
The worst thing about the '70s, looking back on it now, was how little you were told, and how much like cattle you were treated.