Yes, its possible. Shes needs to see her dr asap though.
yes! just because you don't bleed doesn't mean you aren't menstruating. I have had irregular periods my entire life ... I went a few years without one and then BAM! 19 and pregnant. I'm now pregnant with my third child and never actually had a period for at least 3 to 4 months before the positive tests. I've even heard stories of women in their late 30's who thought they were going through "the change" since there was no period for quite some time and then got pregnant.