Went to hospital and was sent home diagnosed with kidney stone I am unable to pass it and it has been 8 days now. Should I go back to hospital?

I can not speak for everyone, but when I had kidney stones, I was not able to hardly stand, the pain was so bad. (and I have a high tolerance for pain)

What level of pain are you in? What did they advise you doing? Did you follow up with your family doctor or specialist?

Depending on the level of pain you are in, seeing your doctor is the main thing. Hospitals are for emergency care, Many people have kidney stones and never know it, because they do not cause any problems, and many minor or small ones are passed with only a minor amount of discomfort. What was the size of yours, and how many was it. Why did yours not pass, too large? Or did they just stop having pain, and no longer seem an issue?

If you have large ones in kidneys, they can do some procedures to break them up. To make them pass easier.