Recently off nexplonon

I recently got my nexplonon removed. Me and my boyfriend have decided to TTC. So I have tested 2 weeks in a row and I feel like the line keeps getting darker. But I started bleeding today. I didn’t have a period when I was on my nexplonon. TMI it’s not red blood it’s dark like spotting. So I just hope it stops soon. Anyone else have this issue? And everything be okay?