Greetings from healthcaremagic.com
I am Dr Sourav Chakraborty and i will be helping you with your query.
Going through your case scenario carefully i presume your recurrent urinary tract infection
over such a long time has been increasing sub-clinically and somehow progress to affect the kidneys.
As per your age , sometimes condition like kidney stones or severe infection can show features of dehydration in your blood like increase in serum urea, creatinine . So you have been asked to visit a urologist
by your primary physician , so as to evaluate any obstructive kidney disease
We see proteins in urine when either there is kidney infection
or disease of kidney tissue which affects the filtration process by the kidneys.
You need to visit both urologist and may be nephrologist
in future if need be , to control your disease.
Hope i have been able to help you . Take Care