Man i hate doctors! What if you went to those doctors in reverse order, the first one found nothing and the second one found the freckle instead?

My wife had a similar situation, had an ultrasound and found a hernia, went to a specialist and said they can't feel it from the outside so there's nothing there.
What the hell did the first guy find then and what the hell is the point of an ultrasound if it isn't as conclusive as the highly scientific feel test!