ExploreSexual health
Bacterial vaginosis (BV)
BV is the most common cause of unusual discharge — an imbalance in the bacteria that normally keep the vagina healthy. It is not an infection you caught from anyone, and it is easily treated with antibiotics.
Common symptoms
- Thin, watery grey or white discharge
- A fishy smell, often more noticeable after sex
- Usually no itching or soreness — that points more towards thrush
- Sometimes there are no symptoms at all
Useful to track
- Changes in discharge and any smell
- Whether symptoms follow sex, new products, douching or an IUD insertion
- Whether it settles and returns
Tests and conversations that may be relevant
- A simple vaginal swab at the GP confirms it
- It is not part of a routine STI check — ask specifically if you suspect it
- If it keeps returning, it is worth still having a standard sexual health screen, as BV can make other infections easier to catch
When to see a GP or specialist
- Any new or unusual discharge — it is quick to check
- If you are pregnant or planning pregnancy, as untreated BV can matter more
- If it comes back after treatment, which is common and manageable
Urgent warning signs
- Fever, pelvic pain or bleeding with discharge — this needs prompt review, as it can point to pelvic inflammatory disease
In Australia, call 000 or healthdirect on 1800 022 222.
Questions to take to a clinician
- Is this BV or thrush? They are treated differently
- What are my treatment options?
- What can I do to stop it coming back?
Related
eophi shares general information reviewed against Australian guidance. It never diagnoses. If something feels urgent, call 000 or healthdirect on 1800 022 222.