Is thrush sexually transmitted?
No. Candida already lives in and on most people, and thrush is an overgrowth of your own yeast rather than something caught. Sex can irritate inflamed tissue and occasionally passes yeast between partners, but it is not classed as an STI and partners do not need routine treatment.
How do I tell thrush from BV?
The simplest rule: thrush itches and does not smell; bacterial vaginosis smells and does not usually itch. Thrush produces thick white discharge; BV produces thin grey-white discharge with a fishy odour that is often worse after sex. They need completely different treatment, and mixing them up is the commonest reason a pharmacy purchase fails.
Why do I get it every time I take antibiotics?
Because antibiotics kill the protective lactobacilli in the vagina along with whatever they were prescribed for, leaving yeast to multiply unchecked. If this happens reliably, it is reasonable to discuss having an antifungal ready to take alongside the antibiotic course.
Does my partner need treating?
Only if he has symptoms — soreness or redness of the penis. Treating an asymptomatic partner does not reduce how often thrush comes back.
Can I treat it in pregnancy?
Yes, but with pessaries and creams rather than tablets. Oral fluconazole is avoided in pregnancy. Courses generally need to be longer, and applicators should be used gently.
Should I eat yoghurt or take probiotics?
There is no convincing evidence that either treats or prevents thrush. Applying yoghurt is not recommended — it is messy, unsterile and no more effective than doing nothing.
Why does it keep coming back?
Consider four things: whether your blood sugar has been checked, whether soaps and washes are involved, whether a preventive regime would suit you better than treating each episode, and — most importantly — whether it is thrush at all. Recurrent "thrush" that never quite responds is very often lichen sclerosus, vulval eczema or a resistant yeast species, and each needs something different.
Am I washing badly?
Almost certainly the reverse. Over-washing, soaps and intimate hygiene products are a cause of thrush rather than a defence against it. The vagina cleans itself; the vulva needs plain water and nothing else.