Implantation bleeding ??

Hey everyone! My cycle is usually 28 days long. I’m on day 33 of my cycle and I’m 5 days late. I was supposed to start on 11/19.

On 11/19 I had a very light amount almost a light pink color when wipping then it went away. 11/20 I had a brown discharge which was only when wipping. Some mild cramps for a few days. so I figured AF was coming. Could this be implantation bleeding? Can it happen the day before I’m supposed to have AF?? I’ve been off birth control since May. My boyfriend and I don’t use protection or pull out becuase we’ve been trying! IYeah