Thanks for writing to us.
The pain on both the sides with a normal ultrasound
scan could be due to a myofascial syndrome
You can take mild pain killers like ibuprofen along with a good muscle relaxant
for symptomatic relief after consulting your physician. Since the pain is persistent, it is less likely to be related to a renal infection
I hope this information has been both informative and helpful for you.
Dr. Rakhi Tayal