Implantation bleeding

Erica
Okay so really need your guys help! So conception happened on the 17th. I have been ovulating late but AF was due on the 22nd so I thought no way. I didn't check when I was ovulating this month. On the 26th I had a pinkish discharge so I thought AF was coming but no. On the 27th I got a brownish discharge and then nothing. It is now the 1st and I spotted a light pink thinking it was AF but no! There is nothing again! I'm so confused! If I ovulated late could this be implantation bleeding??