implementation bleeding

my period ended on Friday 06/01 and my husband and I were sexual active all weekend. my fertility window was suppose to start today and when I went to use the bathroom and I wipped I had very light pink blood. We are trying to get pregnant and my glow is actually very on point when calculating my period and ovulation dates. I've been using ovulation kits and have gotten pregnant before using glow to track my cycle but last pregnancy ended in a miscarriage. Could this be implantation bleeding ?