Hi there ~
I understand your concerns. I believe that you may have a urinary tract infection
. White discharge during the end of urination is an indication of the same. I also think that you will do well if you get yourself checked out for UTI i.e. urinary tract infection and screening for STI i.e. sexually transmitted infections. I also hope that you adequately hydrate yourself and try to concentrate on different things and distract yourself while you are being treated for the same after you consult a local qualified doctor. I hope this helps.
Take care and have a lovely day!