Still Waiting?

Bee
I had my implanon removed on the 15th November 2016
I had two lots of implanon, the first one for 3 years then a straight swap to the next one for another 2 years so a total of 5 years using the implanon. 
Since removed I am yet to have a period or any spotting/ bleeding at all 
I took ovulation tests end of November and began TTC as I head you can still get pregnant even before your period is due. 
I still haven't gotten a period and I've also taken a few pregnancy tests to make sure. 
Anybody else had this happen and any ideas what's going on. 
Thank you