Super late/light period?

So I’ve had 3 children and my period comes every month like clockwork at day 28. 29 days is rare! This cycle I didn’t stay until cycle day 32 😳 I was sooo certain it had to be a pregnancy but that morning I started bleeding. Not a lot but it was red so I figured, ok! Here it is.

Well, the bleeding was a lot lighter than normal but it was red. All together only lasting 48 hours and my periods are normally 6-7 days long.

I’m going to test but curious if this sounds like it could be some kind of early pregnancy bleeding, late implantation or just a super wonky period?! Anyone have similar experience?