How To Treat Foul Smelling Discharge Inspite Of Taking AZO Yeast Infection Pills?

Lately my discharge has a rotten egg smell to it and it s a white color and it s sticky. At first I thought it was just from the smell or using Trojan rubber condoms but even when switching it still has that smell. I thought that it could be a yeast infection because my prone to get those often, so I bought the AZO yeast infection pills but the smell is still there. What does this mean? Also I will mention that there has been slight itching but no problems during sex or urinating.