Hi Lady Neon

You're right, it IS hard to say. Only time - or a test - will tell.
I do sometimes get pre-af spotting. It's normally only the day before, brown or watery red, and soon followed by a full flow. This isn't that, this is like the lightest af I've ever had!

And it just got weirder. I took my temp this morning and it was high (not typical during af, for me at least) and I feel a bit ooky again. This follows another night of strong af-type cramps, but with no 'tearing away' sensation, IYKWIM. Still only very small amounts of bright red.

If it was up to me, I'd say I had implantation spotting last Friday, and this is a 'breakthrough bleed' coz it happened just when af was due, but that there might be *something else* going on behind the scenes! But I've been wrong before.

Any ideas?