Hi, when I have sex with my girlfriend, all foreplay is fine but when I have sex with her a thick White creamy paste appears and is very drying which then in turn makes sex painful for her, so have to get extra lube brakes the whole mood and fail. And it's extra mess which was never there before!

Been with her for about 3 years but it's only the last blimey year I guess it's been doing it, I've been to the doctors and nothing wrong with me (i wear a condom/no pill) but she won't go :s

any advice as what it could be thanks ben