Hello,
The symptoms are more suggestive of kidney stones which can present as blood in urine along with lumbar pain. If the symptoms persist then get an evaluation done from a urologist. When the blood in the urine is at the beginning of urination, it most likely comes from the urethra, (the tube from the bladder to the outside). Blood throughout urination is most likely from the bladder or kidneys or ureters (the tubes connecting the kidneys and the bladder).
Diagnostic tests that may be performed include Urinalysis, Urine culture, X-rays of the kidneys, Cystoscopy, IVP, Abdominal ultrasound and CT scan of the abdomen.
I sincerely hope that helps. Take care and all the best.
You'd better go back and see a doctor. I have had blood in my urine numerous times. Each time it was found that I had a kidney infection. This can cause lower back pain and nausea. If you have a fever with this don't waiste time and go in right away. This can be very serious.