Thanks for your query.Since you have not furnished results of all the test what your father has undergone it is difficult to make any comment.Based on whatever facts you have stated it appears that he has painful haematurea most likely due to impaction of the blood clots
in ureter (Clot Colic)Please get following investigation done to come to diagnosis.
1) Routine Urine Test
scanning of abdomen
3) Serum Creatinine
and Blood Urea..
5 ) Contrast C.T Scan of Kidney Ureter and Bladder. to rule out any space Occupying Lesion.
Consult some Urologist
for clinical assessment and further management.