I'm cd18 and about 6dpo and yesterday I had a quite a lot of blood tinged cm when I wiped, I had struggled all day with feeling nauseous and had cramps, today no cramps but just had the same again but more pink blood in it this time. I never have spotting mid cycle so definitely unusual for me, could it be implantation bleeding or is it too early for that? I have 26 day cycles. Thank you