Implantation Bleed

Hayley

Hi I have PCOS and my peak ovulation was apparently 31st January so we DTD around that time.. boobs have been sore for days upon days and yesterday I felt like I’d been hit by a tranquiser literally couldn’t keep my eyes open .. same today was constipated this morning .. once I went I wiped and then I noticed a little bright red blood and now a little dark brown could this be a implantation bleed would be DPO 11 .. when day should I test for pregnancy ?