uctd and blood in urine

Hi,
    I have undifferentiated connective tissue disoder and hypothryoidism. In past four months i have had three episodes of lower abdo pain. Doc thought it may have been ovarian cyst but scan showed nothing - secomd episode about six weeks ago they thought unrine infection although no absolute proof of that and gave me course of antibiotics. Anyway tow days ago the pain came back with a vengeance and felt worse - today i noticed blood in my urine and went to A and E as it was after normal doctors surgery hours. They detect plus three blood in my urine but no protein and no other sign of infection. I feel shaky and very sore - they seem to think it may be connected with the autoimmune disorder and have advised I see the GP on monday if still in pain (or week after if not) to discuss these three episodes of recent abdo pain and now blood in urine. I'm a bit worried by this as it seems the autoimmune disorder may be attacking my kidneys to me??? any thoughts? what should i ask the specialist whom im due to see on May 14th? they are planning to do repeat blood tests and urine test on 7th but are there any other tests that would rule out kidney involvement now with my utcd??
          Thanks for any help or advice
               Manxie