For the past 2 cycles of TTC, I have started spotting about 5-8 DPO. When it happened last month, I was sure it must be implantation bleeding, but after spotting for a few days, full blown AF showed up. Now this cycle, on 8 DPO the spotting has begun again. It's not enough to even get on my undies, just when I wipe. But when hubby and I BD'd last night, it did get on him a little too.