There can be various reasons for recurrent thrush
1...The symptoms may not be due to thrush,as generally thrush infection is not smelly.There are other causes of a vaginal discharge
like a bacterial vaginosis
or a mixed infection.You may need tests such as vaginal swabs to clarify the cause of the symptoms.
2....Most bouts of thrush are caused by Candida albicans. However, about 1 in 10 bouts of thrush is caused by other strains of Candida spp., such as Candida glabrata
. These may not be so easily treated with the usual anti-thrush medicines.
3.....You may not have used the treatment correctly.
4....recurrence is more likely if you are taking antibiotics, or if you have undiagnosed or poorly controlled diabetes
5... Change in vaginal pH.
Consult your doctor and get the vaginal swab done to know the exact cause for the infection.