Relax if you have been having period for 2 years your gonna be fine. Ive been having them for 20 years and right from when they started at 11 i have never once v*d. Mine are horrendously painful and i get really swollen but as i say i have never ever been physically ill. Dont worry and please eat coz u have to have periods for a good few years yet and not having food at the time of the month could be detrimental to your health.