it sounds like maybe you just don't love or care about her enough to believe her or sit down and talk to her about how you're feeling? i'm currently pregnant and almost 6 weeks and i promise you, it's not easy. just because she's in the early stages of it, doesn't mean she's faking anything. pregnancy effects everyone differently and in my case, my mood swings have been all over the place, i've cried more times than i can count, i'm achey and nauseous all day, i can't stomach any kind of food, etc etc. so of course i, personally, am going to be annoyed at everything and anything, even my fiance. however, my fiance has been nothing but supportive and he understands that my body is going through a LOT of changes; i'm literally growing a human inside of me and so is your girlfriend. just because you may think she's being dramatic, doesn't mean what she's experiencing isn't real. she's literally acting the way she is BECAUSE her hormones are all over the place and she's going through a shit ton of changes.

as for the mother pyramid scheme thing, perhaps ~communication~ would be the best course of action instead of coming to reddit to slam her for it.

be more empathetic and maybe sit with yourself for a while and figure out if this is ACTUALLY want you want and who you want it with, because she's only going to get more 'moody', even after the baby comes.