The doc should have spotted it if its kidney stones, unless he's a useless doc. You don't want to have that, very painful to have and brought on by bad diet.

I hope that pain stops Melitta.
You take care ok sweetie.

mi ingles es bastante malo, pero por lo que he podido pillar, me temo que tienes fuertes dolores, bueno si es asi espero que pronto te mejores, por desgracia no conozco ningun remedio pero bueno si te mando muchos besos

Hope you feel better soon

I know what you're going through. Kidney stones are a total bitch. Not putting marty down, but there are 2 major types of kidney stones: uric acid & calcium. Calcium ones are much easier to handle, & always show up on tests. Uric acid, however, are much more difficult. Trust, I've been dealing with stones for almost 10 years. Hope things get better for you!!!