Do you think that my GF is really a virgin or is she lying to me?

My future Gf asked me what I would think if she told me she was pregnant??? does that mean she is pregnant or is she just wondering,we've been going out for a while but never had sex yet, I asked her and she says noooooo I dont plan on getting pregnat anytime soon. So what do you think? and we are both only 17 yrs old. We havnt met in person yet but we do intend on meeting soon, we have already got evrything planned out. Also I asked about when we do have sex if she would like it anal and she said it would seem painful, and I asked how ofen we would have sex and she said it depends on if she is in the mood,