All negatives and 18 days past ovulation

Ashley

So i am 18 pst ovulation. And missed my hole period. I dont what to do. I have taken multiple first response and digital. I went to buy a cheaper from dollar store after cause ive spent a lot of money on negatives. Today was a negative to. I am always regular 26 day cycle. But as if today when i was at work i had egg white cm mucus that stretch to 2 inch or more and also had very little blood in it and then when i wiped i had very light pinkish blood. Could this be implantation bleeding?