Ay possible talaga, lalo na kung active kayo after your period! A few of my mum friends got pregnant agad after their first postpartum period kasi hindi pa fully regulated ang hormones nila, so walang pattern pa. Best na mag-take ka ng pregnancy test na, or puntahan mo na ang doctor para ma-confirm at ma-check din kung okay ka pa from birth recovery, kasi sometimes irregular din ang period sa first few months postpartum, pero mas peace of mind if you know for sure either way. Sana okay lang at malinaw na agad!