Hi! My AF is due tomorrow and so far there is no sign of her and I hope she doesn’t come. I have taken a test a couple days ago and it was negative. I know some people don’t get a positive until after they miss there period. Is it possible I ovulated later than I thought and implantation took long so I just may not have enough hcg to detect yet? with my first pregnancy I wasn’t trying to get pregnancy so I didn’t even think about taking a test until a week late. Looking for advice ?!