BV and thrush are both common causes of vaginal symptoms, but they’re different conditions with different treatments. BV usually causes a thin, greyish discharge with a noticeable odour, while thrush is a yeast infection that more often causes thick white discharge with itching and sometimes soreness. Because the treatments differ, it’s worth being sure which one you have, especially the first time. If you’re not sure, our sister service Doctors for STI Testing can assess you and discuss testing and treatment where necessary.