12dpo ?

Nakita
Hi ladys... 
Me and my hubby have been ttc for well over a year now waiting for a referal to fertility clinic had af 1sr Dec 2 month of using opks and it said I had my peak 20th Dec and then the line was lighter on the 21st Dec so I have counted from 22nd as 1dpo so yesterday would have been 11dpo and when I done my cervical check I had creamy pink cm and had no more since do u think implantation as I have not had this before I also had back ach and cramps thinking af was going to arrive yesterday to day I have nothing just a little ach in my lower abdomen  if it was ib how long would I wait to test.? 
Thank you baby dust to everyone ✨🌈
This is my opk on cd 20 
My opk cd 21