Google d-mannose. It really does work - I used to get regular doses of cystitis with just the degree of symptoms you have described (burning pain - enough to make me cry - urgent need to urinate every 10 minutes, blood in the urine, nausea, raised temperature, general malaise ... you get the picture), and I'd get attacks like that every few months. In desparation one day, I was searching the internet and found d-mannose. It's expensive, but I ordered some anyway ... and I've never looked back. I now carry it everywhere with me and take big dose if I feel that tell-tale tingle. I've been cystitis free now for over 6 years.