So I ov'd on the 21st and then yesterday got a light pink discharge. It didn't last long and wasn't very heavy. Nothing today just a gentle cramping feeling that doesn't feel like AF cramps. isn't due until the 4th Jan so it isn't that. Does this sound like implantation bleeding and if so how long should I wait until I take a HCG test? Not really having any other symptoms apart from my nipples are itchy???