Ibuprofen is a NSAID.
NSAID's can precipitate Acute Kidney Injury, progressing to frank renal failure, in susceptible individuals, more common in diabetics. This effect can in fact be unpredictable, and must be taken seriously.
Please seek advice from GP who can assess eGFR, and probable impact/safety of ibuprofen upon yourself.
I’m sorry to seem spooked by this, but it does, indeed, generate fear in me.
Paracetamol doesn’t affect the kidneys in the same way.