That may not be related to being fingered although I guess a finger could introduce bacteria into your vagina. Overall though, women can get bacterial vaginosis all on their own without anything sexual involved. It produces a strong and foul odor. Discharge is usually scant and more watery, thin and grey in color. Your mom should know that this doesn't have to be sexually related and antibiotics are used to treat it. So, you have to go to the doctor. They will swab your discharge. You'll have your answer quickly. Also, you could try planned parenthood on your own if you don't want your parents involved. You pay cash, it's usually not expensive and parents do not have to be informed. good luck