Have you been diagnosed with ovarian cancer? All types of gynecological cancers, from vaginal, uterine, ovarian, cervical, can cause unusual discharge that has an odor. Yes. Tell us more as we'd like to support you, hon.
I am sorry you have been diagnosed with ovarian cancer. It would seem reasonable that it could cause altered vaginal odor and more so if you are undergoing chemo. Back pain would seem reasonable too. Wishing you the best with your treatment.