Heavy implantation bleeding?

dana • 💖

Ovulation was not confirmed, but I suspected my 3 day “period” might’ve been heavy implantation. There was a little clotting and the blood started off as pinkish and brown and then it got red then brown again. Pregmate pregnancy test came negative. When should I try to test again? My period is always between 5-9 days long so this short is unusual for me.