Sorry, I should have read your previous posts before I wrote the above advice. Nonetheless, the advice above is still valid. :-) However, here is what I have to say as someone who has personally gone through the exact same thing and ended up with a horrific bladder infection, that involved blood, incredible amount of pain, etc. While the entire time, no bacteria was found to blame... 
No.1: If doctors were doing urine tests while you were currently taking antibiotic (no matter what antibiotic), or you were close to the time you've stopped taking antibiotic, the tests will reveal no bacteria.
No.2: For the successful treatment of a bacterial UTI, it is necessary to determine what exactly is the bacteria, so the proper antibiotic was prescribed. If doctors were just prescribing antibiotics based on your complaints but without doing bacterial culture (in Bulgarian that would mean you would have to give a sample of sterile urine, which the lab would then wait and see what bacteria grows there; it is something that usually takes a few days as opposed to a regular urine sample that can be done right away; it is also collected in a special sterile container, as opposed to a regular "pee cup"). 
No.3 UTIs in women have the horrific tendency to recurr, especially is they were not treated correctly in the first place. 
No.4: There may be no bacteria at all causing all of this, it can be something else (like "pesachinki" or "piasak" - something too small to be seen with ultrasound, but nonetheless causing mechanical irritation that would feel the same as if caused by bacteria, or even worse). 
In my case, as no bacteria was found, the suspicion was that the whole inflamation, blood, and pain was caused by pesachinki. A urologist then prescribed the following: a hymalaian herbal pills called Cystone (Sorry, don't have cyrillic, but it would sound like Tziston in Bulgarian) sold freely in the pharmacies, plenty of mineral water (not the sparkling type), being vegan for a while (meat, eggs, and dairy help the formation of crystals in your urine, not good when have inflamed bladder), and a Bulgarian urinary tract vaccine, called Urostim. 
The Cystone I was to take first thing in the morning, with about half a litre of mineral water, then lay in bed for 15 to 20 minutes, and not eat anything for 30 minutes after I've taken it (or whatever the directions on the bottle are). I was to drink 2 litres of mineral water every day. The Cystone cleanses your kidneys and bladder of things that may be there. I also noticed that either the Cystone, or the mineral water, but your GI tract also gets cleansed. Coupled with the vegan diet, this produced an unexpected but pleasant weight loss. :-) The Urostim I was to take according to the directions in the instruction booklet until I finished all the pills in one package. Then I was to rest 1 month and then repeat. Then rest again (but since this was all long time ago, I can't remember how long I was to rest) and then repeat, but I think the info booklet in the package tells you this. The Urostim vaccine is exactly what it sounds - it is a vaccine for the urinary tract, it "immunizes" you against the most common things causing UTIs. Urostim for me was the miracle drug; to this day I am absolutely in love with it. I followed religiously everything this doctor said, and knock on wood, not only the problem was resolved, but it never appeared again. I would have recommended the doctor, but it was so long ago, I cannot remember either his name, or how I found him...
That all being said, I am not suggesting that you self-medicate yourself, but rather to see a urologist in Tokuda, explain all your concerns, ask that they do a sterile urine (if you are not currently taking antibiotics and if you haven't taken any recently), and then ask about Urostim and Cystone. And by ask, I mean, ask forcefully. :-) And again, good luck!