Implantation ?

Hey guys I'm very confused I've been ttc for a year periods are off somewhat but range between 30/40 days max.. I still am getting strong positive opk I'm on cycle day 35 and I have had a pink tinge when I wipe on the toilet paper and today I had like two drops of blood and it stopped.  By my app it shows my period should be in 5 days...I have had no signs of a period coming like I normally do..sore boobs... Cramps...backsche ...ext... Could this be implantation? I never had it before...I have one child and never had it with her ...I calculated and if i ovulated when I first got my positive opk them yesterday and today would be the most common for implantation ...I usually have brown discharge leading to a full ain't flow and this is nothing like!