TTC and 8 DPO (2 days ago) had very light spotting, feeling exhausted, was so sure I was pregnant. Spotting lasted 2 days and I was going to do a test today. AF due in 4 days and it's never ever early. But this morning I've woken up with what seems to be more like darker red period blood. Is this too heavy for implantation? Stupid question but can I still test? Or is there no point?