For me, it was a relief when I finally got a diagnosis of Gallstones. I had been struggling with intermittent pain for years, and had been told I had IBS and to try elimination diets, but nothing worked.
I went on holiday and really ate well, had one pretty bad attack on holiday that I just about got through, then had a second the day after I got back that was so bad I ended up in A&E for morphine, and finally had a reason for the pain.
However, the NHS was not interested in a follow-up appointment as this was my first admission. Didn't matter that I had been to my GP many times over the past 5 years; I had to have more attacks before they would do anything. They didn't even offer proper advice.
I went back to my GP, who gave a small amount of advice and prescribed strong painkillers in case of an attack. As there was no way I was going to live with the ticking time-bomb of another attack needing A&E, I took the private route.
It took me 3 months from the A&E admission to having my gallbladder removed, and despite the cost, it is still the best thing I have done. I avoided a major attack during the wait, but only by restricting my diet massively and being very careful. I could have had it done within 8 weeks, but I opted for a later date (after the surgeon's holiday and a half-term).
If the money had been an issue, I probably could have managed an 8-month wait, but it would have been hard, and I would have been anxious the whole time, expecting another bad attack.