Blood in urine. Me with your advice.

28 year old Male, diabetes patient. Yesterday morning I noticed that my Urine is very abnormally dark in color, suspecting that it could be blood I checked with a physician at a local hospital. Urine routine shows that I am passing significant amount of blood through urine. The doctor also prescribed an ultrasound to see if it could be due to kidney stones. The report came out normal. My urine sample has gone for culture which will take some time to come. My doctor has not prescribed any medicines yet, only asked me to drink lots of water. Today night I woke up due to pain on the left side of my abdoman where the kidneys are. I want to know if waiting for the reports to come is the best course of action as I can clearly see my problem getting worsen. Please help me with your advice.