I NEED HELP ASAP

Okay, so lately I've been noticing that my discharge has been smelling like cat food, bad. I don't know what to do and I know my boyfriend notices it, but he still insists that it smells fine, but I think he is crazy.. how do I make that smell go away, no matter how much I clean or shower it stays. also, even if I go in the bathroom before sex and clean myself, when I go back into the room and lay down, I smell it again, it's getting really old and on my mutves. I need help. please.