Help, need advice

I need some type of input. I ovulated around the 7th/8th of the month and we BD on both days. My period was due on 21 October, but ended up coming like two days after ovulation, which was really weird. Anyways - It came and lasted around four to five days. Fast forward and today is the 25th and I have brown discharge. Someone give me some type of knowledge. Could I possibly be pregnant?