I got my IUD outta my arm in November, my period is finally come when it's suppose to. I've been using opts since the last 2 weeks of Feb. I had a small very faint line then nothing, I got my period, and even tested during that. Then on the last day of my period I started getting a faint line and have had a faint line since, it hasn't darkened at all...now the app says I should be in my peak and the line is still faint, maybe a tiny bit darker bit no where as dark as the control, or even visible...Pics of my calender and my opts from this morning and afternoon..any advice?