Hi, I am 13 days past ovulation. Last night when I wiped there was a tiny amount of pink blood on the tissue, so I thought I was about to come on. I woke this morning expecting to be full blown AF but nothing. I went for a wee and again when I wiped there was a tiny spot of blood. But now its lunch time and still no AF. I took a test just now but was negative, but have had two drinks this morning and had not long been for a wee before. What do you think ?