Mirena iud after 5 years, 1yr ttc.

Anabel • 2 healthy pregnancies, youngest child is 7. Had mirena for 5yrs. Been TTC for over 1.5 yrs got pregnant in Sept found out on 10.22.15 had 1st miscarriage bc his lil heart stopped.I was almost 10 wks
Had iud for the full 5 years and been TTC for last year and still nothing. Anyone have same or similar issue? How long before becoming pregnant?