Taz, I have had Trimethoprim, then Nitrofurantoin, and its another dose of Nitrofurantoin I'm back on at the moment.
I always usually have blood in the urine too, had a cystoscopy for that in the past and was told it was due to my age and quite common in menopausal women. The pain varies, but I feel it low down behind bladder, where I am tight and bloated. Sometimes no pain but just the tightening feeling and sometimes like a nerve pulsing (if that makes sense), sometimes its a stinging burning pain almost up where my ovaries are. I was tender in the ovary area yesterday when the nurse examined my tummy. I also have pain in my lower back. It's actually good they are being thorough and I am being sent for a scan as well. My health anxiety isn't great though so I go into panic mode very easily. No, I don't have the home test strips. The colour of my urine yesterday was shocking! But its not like that today. I don't feel like I am passing a lot of urine though, when I do go, so I'm perhaps a bit dehydrated. The other two things you mentioned (high protein and leucocytes) I think could have been what the nurse said was showing in mine. What causes high protein in urine, do you know? I remember having this whilst I was pregnant.