My girlfriend i'm currently with has never been able to orgasm. She has been with two other guys besides myself, and she does not even react when I attempt to stimulate her clit. We talked about this last night, I asked her questions about it because I was concerned, and she said she has no feeling when I try to stimulate her clit. She is also a very small girl like 5'4 and barely over 100 lbs. Is this something we should be concerned about and can it be fixed? Is it a health problem?