I had mine removed on De 07. Got my first meriod on feb 08, and got my BFP on March. im curently 16 weeks!
It will happen soon, just let your body adjust.
Best of luck!
I had mine removed on Nov. 14th, had a period on the 23rd. After only having one while on the Mirena and then got a positive pregnancy test on December 19th!!! So it can happen really fast. I am now 30 weeks!