3 weeks and 5 days pregnant and pink spotting?

I found out a few days ago I was pregnant. I Had crampings 2 days ago and today while wiping I got a very weird bright  pink discharge. On top of that my period was supposed to start October 5th. So I'm little bit panicked and my doctors appointment is tomorrow. I found out 9DPO with a clearly positive test. Implantation bleeding can't be right?