Can implantation bleeding occur cd32-33?

Kaitlyn
I got a neg hpt. Pink tinge cd 32 but no flow. Cd 33 today. Very thirsty and usually never like that! Normal cycles for me are cd32- 36. I know I ovulate but can't pin point ovulation day, never positive on opk's but shows ovulation on blood test. Can it be implantation or is it to late for that and my flow will pick up any day now?