Thanks for the query.
There is possibility of bacterial vaginosis
which can occur due to the overgrowth of local colonizing organisms.
Frequent usage of antibiotics, disinfectants to clean the local parts etc can increase this possibility.
So instead of using medicines by your own better to consult gynecologist and get examined to find out the actual cause and take treatment accordingly.
Mean while you can follow measures like clean the local parts only with plain water, use cotton inner wear, keep local parts dry, take nutritious diet, drink plenty of water.