HELP! Vagina HP: Sour.

It's been awhile since my boyfriend has went down on me & I don't blame him. Lately my HP levels have tasted really sour & has been smelling very fishy. It's terrible & I feel embarrassed. I use to have high confidence, but it has vanished. I eat all the right foods (never Fast Food or junkie food) Vegetable and Fruits are always in my diet. ESPECIALLY pineapple. I have gone to my doctors within the last week & I do not have any STI's or STD's, etc. (Not sure if those can play a role in it as well) 
Is there any way I can make my juices sweeter again? Please help. 🤕😢 
& Also, would vagisil work good?