An Awesome Girl Question! (sex problem)

[captZEEbo]

okay my girlfriend and I are both virgins before we met. We are still kinda virgins except I have stuck it in her vagina (not sure exactly what virgin means) to feel around for a little bit but not ejaculated (I haven't gotten around to getting a condom. I'm pretty sure precum can get a girl pregnant too, so I was also trying to get precum out before sticking it in. Also we were doing it while she wasn't ovulating but I plan on getting condoms asap).

Anyways, she said I never got it all the way in there both times (my first and 2nd time with penis in vagina and hers too). Since I know nothing about sex or women's anatomy, what are the odds I suck at sex and what are the odds my penis is just much, much too large? FWIW, she's a whole foot shorter than me (I'm 6'7"). She said that her tampon goes all the way in farther or something. She tried guiding my penis with her hands too while I just laid there and that didn't really work either.