AF expected 6/2 Cycle buddy?

Hi everyone I'm TTC second child with my hubby. Our son is 7 and graduating first grade soon. I was on the copper IUD for 4 yes with no problems getting my period on time. This will be the third month off the IUD my periods have been on time just a bit shorter only lasting 3/4 days.. With our son I was 27 it took 3 months. I wonder how long it will take this time around. My son wants a brother :-D