Ai, ini memang common lepas beranak, especially kalau still breastfeeding, hormones kita masih lagi tak settle betul. A few of my mum friends pun experience the same, period datang skip-skip, atau delayed gila-gila. Since anak dah almost 2 tahun and ni dah berlangsung berbulan-bulan, I'd really suggest check with your gynae to rule out anything else, bisa jadi hormonal imbalance or ada masalah lain yang perlu tahu. Kalau still breastfeeding, tu memang boleh affect the cycle, but at this point better safe than sorry to get proper check-up, okay?