It is a complete falsehood that all women can come through intercourse alone. I have four friends (girls), one does everytime, two only through clitoral stimulation, one never has! I could only orgasm through lots of foreplay (having my nipples played with and sucked), fingers on my clitoris, and cunnilingus. Only in the past ten years have I actually had an orgasm during intercourse and that was with stimulation of other parts. It also depends on how horny (sorry) you're feeling - if you go into it with the 'oh its not going to happen' attitude - it wont. Try some mutual massage first with some nice oils, getting him to touch you (gently) all over and find your best erogenous zones, gradually working towards intercourse - and if you need to play with your clitoris whilst he's inside then damn well do it - your just as entitled to an orgasm as he is!! And, NO, it does not really matter how big or small his cock is - its how you feel about each other and whether he is a considerate lover or not. Hope this helps - good luck. x