Anak, importante talaga yan, please go see your doctor as soon as you can, lalo na kung ganyan kabilis ang pagbaba ng timbang mo in just a month. Maraming reasons pwede dito (stress, diet changes, health stuff), pero kailangan talaga ng professional check para malaman kung ano talaga ang nangyayari at ma-address properly. Hindi ito bagay na pwedeng i-monitor lang sa bahay, go na, ha? Rooting for you!