Sorry for my opinion..... A vet can tell ABOUT how big a calf is, they can also tell ABOUT how much room a cow's pelvis has, a vet can also tell ABOUT what shape the calf's head is. Problem is ABOUT isn't good enough, and by the time they get done digging around to tell you ABOUT the calf, the damage is done.
By the way, one of my "vets" had a cat while growing up. One of my "vets" had to ask what color a herf was for a health paper. Another loves "farmers".
I have one that has been a vet for many years, and is decent, but still thinks Chi's are suppose to be 8 foot tall.
I have one that said my calf died because it "apparently quit breathing".
So I guess, consider yourself lucky. While you are patting yourself on the back, ask yourself this : I talked to a vet that has been in practice for 50 years. He was raised on a BEEF farm that ran hundreds of head of momma cows, and still runs 150 head to this day. He said (and I quote) "I would never induce a cow unless the cow is in a life and death situation.... and if that is due to the stupidity of a mating done by a human, then I would have to castrate the owner after I did the c-section to save the cow the owner tried to kill." Yeah, he doesn't mix words.... too bad he lives 3 hours away.
(By the way a vet can rarely find multiple births when the cow is past 4 months bred..... so your lost triplets was just bad luck) Good luck Jordan. Good Luck!!