Thanks for writing in.
As per the description given above, it does not look like it is cancer. But rather it looks like vaginal infection
or pelvic inflammatory disease
[PID] causing white discharge per vagina and fishy odour, itching on labia and pain in ovaries.
I would recommend you to consult gynecologist to get treated for infection. In that case infection needs antibiotics [for PID] and anti-fungal for candidiasis
You can ask your doctor to do PAP smear
once infection is cleared up. But chances for CA cervix
are very few.
Do not worry regarding cancer.
I hope I have answered your query. In case of any doubt, feel free to revert back.