Period returning after Nexplanon

I had my Nexplanon removed the end of April and I started on the pill that day. I got my period in the middle of the pill pack and it was just a normal period. Now, I just finished the second pill pack a week ago (and I decided I'm done with birthcontrol) and my period is no where to even hint of coming. Is my cycle still messed up from the Nexplanon? I've taken several test and they are negative. Has anyone had trouble getting there period back after the Nexplanon? Just very nervous