I'm TTC my first with my SO. December of 2014 I stopped taking the depo shot and haven't been on BC since having the nexplanon from May-July of 2015. I'm so worried that something may still be in my system but maybe I'm just nervous. I've been taking OPK's for over a week now since it's supposed to be my fertile week but I keep getting only very faint lines and it seems like I'm never going to ovulate. Any advice?