What Causes Dark Yellow Urine Along With Bad Odour?

started having this problem in mid 1990 s. Would have extremely bad burning and pain when urinating and urine would be dark yellow and smell. Also, right at the end of urinating I would have very bad pain and it looked something similiar to sand in the toilet. It started out happening a couple times a year back in the 90 s. I am now 49, and the problem has only gotten progressively worse. about 3 or 4 ? maybe even 5 years ago, I had to completely stop drinking coffee, tea, soda, juice, milk. Only drink water and if I do have a sip of something else I usually pay dearly for it. actually, if I dont drink enough water now (which is like every day) I have very dark yellow urine with bad smell and right at the end of peeing something that looks like sand comes out and I also have very bad Pain when I am at the end of peeing and the stuff that looks like sand comes out. When I have severe episodes of this, I can easily spend over an hour in the bathroom drinking bottle of water after bottle of water until I finally have normal looking pee and pain subsides. The past 2 years now Ive been having pain right where my kidneys are in my back. It started on Left side last year and lately it can be ither side. I do love to drink milkshakes/milk usually mixed with bananas and chocolate syrup (i know, I m weird). I did finally tell my Dr about this a couple years ago and he told me to drink more water. I told him that I had read articles online about kidney stones and that I learned there are 5 different types a person could have. I thought that the sand like stuff that only comes out very last when peeing, was maybe kidney stones. And, I thought that maybe they were the ones that are caused by calcium (milk), since I do like my milk and milkshakes. My problem has now become an everyday problem, even if I just drink water-like maybe 2 bottles of water per day, I have very dark yellow pee that smells and then right at the end of peeing this stuff that looks like sand comes out and I have severely bad burning and pain for awhile now especially in the morning. If I were to drink a whole lot of water (which is hard for me to do) but if I m having a really bad episode of this severe pain and burning then I Have to guzzle that water down. bottle after bottle. by the way, around the same time (mid 90 s) I remember when my ankles and the calves of my legs had swollen very badly. This is how bad: I had showered and shaved my legs and afterwards my legs hurt real bad they were very dark like dark red. I thought it was becuase I hurt my skin real bad from shaving my legs when they were so swollen that my skin was like stretched out. Anyways, just last year after I finally told the Dr about my back pain and showed him where at and he said he was worried about kidneys. so I took U/A. Nothing showed up on it though. I find that very strange. It s a good thing I dont drink alcohol or was alcoholic as water seems to be the only thing I can drink. I do have a sip of soda maybe 2x/year or juice. I do however usually have a milkshake-1 glass that usually is spread out throughout the day and then I drink water with it/afterI take drink of shake. Do you think I have a more severe problem with my kidneys? Have to admit, I am becoming quite scared that theres something severely wrong. I m very scared/concerned that I m going to end up going through terrible things (like horrible procedures, surgerys, treatments, etc.) only to end up suffering and dying in pain. I had quit my very good pharmacy management job when I was young about 25 to take care of my mother. At that time she needed 24hr care and I did not get paid. What I thought was going to be a short time..... didnt turn out that way. As I am Still doing 24hr care for my Mother. I have basically had no life since age 25. I always thought I would Have a life again after I was done taking care of my mother. Now, I worry that I may not be around because of whatever it is wrong with my kidneys. It scares me very much. Also, worries and saddens me as I have not had much of a life and now maybe i for sure never will. I also have my wolf-dog whom also requires special care. dont get me wrong, I am glad that I have helped keep my mother out of a nursing home as (at least my sister and I both think) that my mother wouldnt be here right now and would not have been happy in one. Now, unfortunately, my mother has what most people say is Dementia along with several other health issues, diseases, diagnoses, surgeries etc.. Anyway, can u please tell me if there is some other testing that should be done and from what I have told you..... do you think it is treatable? Or ?treatable to where its painfully treatable and repeatedly has to be treated for and going to be painful? Thank you very much for all your time. I do appreciate. Oh, and one more thing wrong that started about 5 or 6 years ago which is ....my hair has gotten very thin. I used to get compliments all the time if I went shopping etc.. I sure dont get any now and I sure dont expect to. I can only do so much with thin hair. it does depress me greatly as I used to always have big hair but it was pretty hair as I curled it every day. Anyway, dont know if that would have anything to do with the kidneys but it bothers me almost as bad as kidneys. Again, thank you very much for reading all of this and for all your help that you can give me.