Implantation?

This is my cycle schedule since July. Today I started spotting and it appears to have stopped. For those who've been pregnant before, does this seem like possible implantation or no. 
July 6-12th
{41 days}
August 16th-21st
{41 days}
September 26th- October 2nd
{40 days}
November 5-10th 
Ovulation - November 27th
{34 days}
December 8th - started spotting; cramping started on 5th, continued through 8th, spotting started as brown and light pink, inserted lite tmpx, came out 3 hrs later dark brown/black, inserted other lite tmpx, 2 hours later came out barely dirty at all with light pink and brown again. Other symptoms: loss of taste and breast tenderness. 
Sharing anonymously bc I have friends on here and I don't want the cat to be out of the bag just yet incase I am pregnant.