Many thanks to all those who took the time to reply to my questions. I am reassured by the reponses.
I did have a dipstick urine test when I first presented to the GP. He found blood and protein in it but no high readings of white blood cells. Again he didn't seem overly worried by it and I'm not sure it's a urine/bladder/kidney problem. It more points to the gynae/bowel area.
Does anyone know if what a general ESR reading would be if inflammatory bowel disease or an inflammed bowel was present? I asked my GP about this condition and he said there would be blood and mucus present in stools which there isn't but I've heard of others with this condition who didn't necessarily have these either.