Usually have 27-29 day cycles. Not sure exactly when I ovulate as I’m not ready to go down that path yet but we are concentrating efforts around the right week.
Anyway, I’ll normally get a bit of spotting on day 27 or day 28 which turns into a medium flow period within 12 hours, then heavy the next day, then 2 days of light bleeding. Clockwork, always the same.
So, I’m now on day 30 today (Thursday). Tuesday I got a bit of orangey CM when I wiped so, as I had a really busy day ahead and because I know it comes on pretty fast after that put in a tampon. Usually I can feel when I need to change but I completely forgot about this tampon all day 
. Took it out at bedtime and there was a teeny bit of blood on one side. Slept in a pad and it was clean in the morning.
Used 2 tampons yesterday, first one, teeny bit of blood again. Second tampon, nothing so went back to a pad. Nothing since.
I’m getting my hopes up here but can’t bring myself to test. I had what I thought were period symptoms on Monday, I woke up with a sore back and was horribly bloated all day, but that has passed now.
Google is telling me implantation bleeding but wouldn’t it be more brown? The blood was red I think, although there wasn’t that much of it.
I know you are all going to shout DO A TEST WOMAN! but I can’t bring myself to yet.