Conception after mirena coil

hi I was just wondering if anyone has any experience with this I had the mirena coil removed on the 9th of may. I bled from the 12th of may for 12 days and havnt had a bleed since. I've done a few home pregnancy tests which are negative. possible conception dates would be the 2nd, 6th and 8th June. we have 2 kids and were hopen for a 3rd one I feel as if I'm pregnant and new quite early in both previous pregnancies when should I test to get an accurate result?