Hi there ~
I understand your concerns. It is a very common problem to have white discharge after urination and is a sign of a Urinary Tract Infection
(UTI) which can be easily treated with antibiotics and adequate hydration i.e. drinking plenty of fluids. The other reason may be an STI or a sexually transmitted infection and I am hoping that you have been screened negative for the same already. I would advise you to see a local doctor for the appropriate medication if the Ciproxin
is not helping. Also the back pain
may be treated with analgesics.
I hope this helps. Take care and have a lovely day!