Ay, withdrawal method talaga yan sobrang unreliable lalo na kung irregular ang period mo, maraming kaibigan ko na nag-rely lang doon tapos surprised na agad nagpregnant! Two months delayed combined with irregular periods ay dapat talaga check mo with your OB para malaman mo kung ano talaga ang situation, baka may iba pang dahilan o kailangan mo ng proper family planning guidance na swak sa katawan mo.