Thanks for the query.
I assume that your urine albumin
levels were high and that is why a biopsy
If you have difficulty in passing urine now it may be due to a blood clot in the bladder which may be seen due to post biopsy bleeding.
So i Suggest that you should get an ultrasound
of the kidney and bladder and a urine analysis.
Based on the results your nephrologist
can discuss further treatment options with you.
Hope this helps