Implantation bleeding?

Kristie

I had my period Jan 11th-17th. Glow says I'm due on feb 12th (but I think it should really be more the 8th) glow has my fertile days Jan 25-31.

Today I wiped and had the tiniest bit of blood and none since. Been ttc since June hoping it's implantation bleeding and I get a positive soon. What do u think? When should I test?