Doesn’t anyone answer anymore!?! Af or IB

So AF was due yesterday 1/14. I ended up getting it 4 days early on 1/10, (I’m never early, if anything I’m a couple days late) however it was much lighter than my usual flow but I thought it was too much to be implantation, plus it was red. I also didn’t have any cramps (which are usually terrible for me for the first 2 days) and not even one clot. It only lasted for 2 days (usually AF is 5 days) and then literally just vanished. It didn’t taper off or anything, it just flat out stopped. The next day, I had nothing, then yesterday, I had very light pinkish/brown spotting. I’ve looked on some forums online and some women report having implantation that was about the flow of their period. Although more commonly it’s just spotting, a lot of women reported that their implantation was heavy and red and that they thought it was their AF. Anyone else experience this? Any opinions?