I’m confused... did i cum or not?

Me and my boyfriend are sexually active and have been so for about 5 going on 6 months. He orgasms very easily and sex is a blast for him. However i have yet to orgasm and i don’t know what’s wrong with me. Is my vagina broken? Lately there’s been this white creamy looking liquid like thing during sex but i don’t think it’s fun because i don’t feel the orgasm. What’s could white stuff be? Should i be scared is it normal? I went to the doctors and I’m all clear i just don’t know what this stuff is.