Eh, subur awal tu normal lah depending on cycle length kamu! Kalau cycle kamu 28 hari, from 12/12 ovulation biasanya around day 14, so that's around 26/12, tu memang earlier than expected kan, tapi if your cycle is shorter (like 24-25 days) completely normal je. One of my mum friends had a shorter cycle and she kept thinking she was irregular until she properly tracked it, turns out she was just naturally early!