Hello,
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Of course a discharge like this is not normal and usually reflects an infection of either bacterial, fungal or parasitic origin. It is impossible to guess what the cause is without the benefit of examining you and performing a microscopic exam of the discharge.
In the absence of being able to do this you could try an over the counter preparation to treat a possible fungal cause. This would be clotrimazole and is used once daily at bedtime for at least 3 days. It is a topical cream actually which is inserted into the vagina.
If this does not help kindly visit a Physician for clinical examination and appropriate treatment.
Take care!