Here are my calendars, I am currently late on my period- only have been having very very very light pinkish brown , hardly can see the difference on my to after I wipe. No clots, no red basically unnoticeable except I'm eyeing it down. So I'm going to be optimistic and have some hope that could possibly be implantation bleeding.

I took a dollar store test today and bfn. When should I retest? I understand hcg only starts producing after implantation occurs which can take a few days.