I've been with my girlfriend for almost a year. She's very shy sexually and i am the first person of the opposite sex to ever see her naked. The problem is that she has a really disgusting odour down there. i first noticed it the first time we spent a night together. She went into the washroom to pee. i went in after her and the smell was very potent, filling the whole room the way feces do. i've tried to go down on her several times but i cannot enjoy it. Its not a fishy smell, it smells like urine and onions. What could it possibly be and how do i let her know its really disgusting without hurting her feelings