Implantation bleeding or period?

I’m TTC #2, and AF was supposed to arrive on Saturday, but didn’t, and pregnancy tests were negative. I took another test Tues AM and it was BFN, and then I started spotting, so I assumed AF was here. However, it didn’t even fill a tampon (sorry if TMi but I kept swapping them out and they would just be tinged with like a streak of red), slept in an overnight pad that was dry the next morning. Yesterday was even less, most tampons were totally dry and today I have no spotting (should have been AF day 3).

So I guess my question is, what’s going on?? I heard implantation bleeding was a myth so maybe I just didn’t ovulate this month and had some light anovulatory bleeding? Or Should I take another pregnancy test in a few days?