Is this implantation or ovulation bleeding??

Margo

I was fertile 10/27-10/31

I ovulated 11/1 and 11/2

11/3 I’m having brown blood discharge when I pee. It’s not thick at all it’s very liquid.

11/4 just woke up and there is still very little brown discharge that’s liquid and I’m cramping..

WHAT DOES THIS MEAN? I’m so confused I’ve never had this before.