Thanks for all these additional information.
I understand your concern.
Well Protein can be present in the urine due to problems such as kidney disease, kidney stones. If you have back pain associated with this, kidney stones maybe the problem.
Other common causes include exercise, dehydration, stress, fever. These cause transient proteinuria meaning it goes away.
If you continue to have protein, then your doctor may do more evaluation (kidney function tests).
I would recommend that you see Urologist or an examination and they may need to do the CT scan to evaluate for kidney stones that may need to be treated.
In the meantime you can try some self care measures like
Hydrate yourself with plenty of fluids.
Also eat low protein food.
You should take OTC Motrin for pain.
And do warm compresses with a heating pad on affected area.
Cranberry juice can be tried.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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