I really think you both should go together and see somebody about that. I've never heard of this happening before unless it's some start of a yeast infection that you two are passing to each other. How long's it been going on? If it hasnt been causing you much physical pain altogether it probably isn't way too serious but you can never be too serious. I think it's probably safe for you and your husband both to go together to an appointment with a doctor and see if theres anything they can tell you. Good luckkkk =)