TTC #1 after Mirena Removal in August 2015

Hey all! My boyfriend and I are currently TTC baby #1 together, he has one son already whose 8 (boyfriend is a bit older than I am). Any tips? It almost been 3 months since I had the Mirena removed. Last cycle we had I guess what you would call a "pregnancy scare", but obviously we were welcoming of the idea of being pregnant. I was 4 days late, had multiple early pregnancy symptoms, but all BFN's. Then AF came. Now I'm in the week before my projected ovulation week. 
How long did it take you to get pregnant after Mirena ?