Ay, two days lang naman ang delay mo, totally normal yan, nangyari na rin sa amin ng ilang friends ko! Sometimes ang stress, diet changes, or kahit overexercising lang ay makakadelay ng period, so hindi automatically negative ang PT result mo. Best thing to do is wait a few more days and test again if wala pang period, kasi may times ang hCG levels pa lang ay low pa to detect, or baka talaga lang delayed cycle mo this month. If super worried ka, mas safe to check with your OB para ma-confirm na, they can do blood test pa if needed!