what is this bleeding

Laura • mummy to 3 kiddies. Matthew 2011. Theia-Jean 2018. Eva-Grace 2019. Oliver 2021

ive just gone to the toilet and whrn i wiped there was a pinky coloured blood on the tissue. i have put a sanitary towel in my undies but im not due on my period for another 8 days. i went back to check a little later and now there is nothing there. this never happied with my son and only been TTV for a week can it happen this quickly? what is this bleeding?