Best of luck with the medical side of this. It IS best to get a clean bill of health first. Ask more questions when you're ready.
But keep in mind that Brooks at least had several different models of saddles, now and throughout their 100+ year history. They were designed and built for different physiognomies and ways of riding bicycles. You could have an unfortunate choice in either one. Also, leather saddles become too old, too stretched, or too distorted to function properly and give a comfortable ride even to the person the saddle was intended to fit. Depending on quality, use or care, they can need replacement anywhere from 1 year to 40 years of use.