In the same boat, and agree that the first one was the worst because of the unknowns and associated pain.
That does not mean the later ones were less painful, but knowing what to expect, recognizing the symptoms early, and getting mentally ready go a long way. A well stocked medical cabinet with potent pain killers is a must, and I don't take long trips without them either.
Unfortunately, not all will pass naturally, depending on size and shape, so I'm looking forward to having this option available when needed.
If you've not had it, I cannot more highly recommend ESWL. In my case, it just felt like some light bruising for a day or two, and otherwise an 8mm stone in my kidney was obliterated with no effects.
Had it a couple times. I usually try to let the stones pass naturally, unless of course they get stuck. Success rate for the targeted stone has been 100%. Recovery has been quick with minimal bruising, first day getting up was a bit painful without painkillers. I do have a bit of concern about the impact of ESWL on the long term health of my kidneys.
The first was the worst because you don't know what it is. Subsequent stones didn't seem to be as bad, since I knew I was going to survive.
The emerg doc told me that some ladies say the pain worse than childbirth.