I need a womans help!!!?

my girlfriend and i have been getting more intimate lately, she is a virgin, i am not, the worst part is that, well.....my..... "equipment" is rather large. im not trying to brag but im about 9in long and about have the girth to back it up. i attempted to make the first time i penetrated her a very easy, very slow experience, but two days later she is still sore, i need some hints on what would help me ina any way, i know the pain is eventually going to subside, but i really want her to be able to enjoy the first few times.