I realize your post is from the 5th but it doesn't appear as if anyone answered it. Anyway, I just spent Xmas Eve and day in the hospital becuz of a kidney stone
attack. Never have had one, so this is my first and hopefully last ever. Anyway, the stones, as they begin to pass through (and they come out via the urine so you need to strain your urine to see them), will cause the pain. Now exactly where the stone is, ie, I've got one stuck at a "junture", will more than likely be the reason for how much pain and how severe. Mine was severe. So you're drinking water and say sometimes the pain will go but it will more than likely con't to return until the stone(s) are passed. In other words, it sounds like you got one (or more) on the move. Just how long this takes is basically anyone's guess. I've heard (while at hospital) a month or longer. So this is where the need of a good kidney cleanse
will come in...to get the stones moving and out. Of couse, the hospital doesn't tell you to do a kidney cleanse. They just sent me home after 2 days of being on an IV and a RX for pain meds. Well I'm going to do more than that as the kidneys are the filtration organ! I can't imagine overburdening the kidney(s)with more heavy drugs. Just doesn't make sense to me. But anyway, I've been told the stones appear like "crystal" and are as tiny as a grain of sand (yet cause horrible pain). This is why it's difficult to see them. But I was also told that "you will know when you pass one" so the pain must be pretty intense. Of course, I can't imagine how it could be any worse than the pain when the attack first started. Also, a severe attack, will cause vomiting and chills w/a temperature. I think this could be deceiving to some people...possible thinking it was a flu IF they didn't experience pain that lasted in the kidney area. Also it feels like a horrible gas attack.
Hope this helps a bit.