Implantation?

UPDATE: I am still spotting but still no af. It hasn't really increased in flow but still a negative pregnancy test. So I'm not sure what is going on

So I'm wondering if this could be possible implantation or if it's just the start of af. It was a day later than I was supposed to get af and it's only there when I wipe but I am slightly crampy like barely and I'm bloated, but that could go either way. I originally started spotting at 1 am. Then it stopped and just started back up again about 20 minutes ago. Just wondering what other people's opinions are.