<human>: Me and my girlfriend having been in a loving relationship with each other for 4 years have had a fair quantity of sex. Every now and then she says that she doesn't know if she's had an orgasm during sex although she's overall really enjoyed our eperiences.

She has had many oral orgasms and I know that both are different. Recently we've had a tense boring period in our relationship due to me becoming a bit down about a few life experiences I've had.

What could I do for her to have an orgasm during intercourse. Is it possible that not all women can or is there something I can try. Our best position would probably be doggy because she basically near enough passes out after that but we hardly try anything else and sometimes she gets scared if I spontaneously try something new.

I don't think she likes her clitorous being stimulated during intercourse although I've never really tried it and she never initiates that herself either. She is shy when it comes to sex (although she's loosened severely over the years). 

She says that some positions that we've tried hurts because of my size but I would like to think I'm average and that because she is only 5'2' that she finds it larger?

I want the next time to be the best so any experience/tips are appreciated.

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<bot>: Want to pleasure my girlfriend in new ways and don't know how. we've been through a rough patch and it's beginning to spark again. Advice?