Hello I was wondering if someone could give me some light

My period is on the 24th August but today I started to have some bleeding but is not heavy at all and I am currently ttc

I had sex on the 5th August I’m currently 3DPO never experienced any off this before as is all new to me I have ask few people but got negative reviews so wasn’t impressed :( that people can be harsh

Why iam I bleeding 🩸 but is not my period due date and is now stopping slowly