Two weeks ago I first thought I was maybe passing blood in my urine . Last week ( Monday ) I really passed a lot of blood and made an appointment next day with GP . I was given Nitrofurantoin ( possibly uti ) but the test on my urine sample found no traces. Two days later I again passed more blood and managed to see another doctor ( whom I struggled to understand not his fault ) and has referred me to the hospital for tests on the 2 week programme. Since them it’s not been to bad and I’m in no pain ( although obviously worried and sleep not so good ) . I’m 74 but in reasonable shape and have not lost any weight and no other symptoms. Should I stop taking the Nitrofurantoin as it seems I haven’t a UTI ? Also I think he said if the symptoms get worse go to A&E ?