Ok so what I thought was possibly af came a day early. But it was super light pink. then the next 2 days it has been very very light compared to my usual period and brown. I am on blood thinners so my period is usually quite heavy for most of my period. So I'm starting to think this may be implantation bleeding. I have had no clots or bright red blood, just pink and brown. So today would be the third day of this. how long should I wait to test? hope this is it for us. I've been trying for 7 cycles now. And my husband's birthday is coming up so it would be a super awesome birthday surprise 😀.