TMI. Bleeding - AF 4 days away

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I'm 4 days away from when AF is due, and 11days after ovulation.. Today, when I checked for cm it was a little pink. I'm starting to feel scared at the fact that it could be AF showing really early, because implantation bleeding seems to be so rare. I'm almost 1year TTC and it's getting really scarying getting so close to the 1year mark. Just need to share this feeling with someone.. Since I can't share it with anyone.. Thanks.