TTC after nexplanon

Is anybody else TTC after erring their nexplanon removed? A few years ago when I got my implanon removed I accidentally got pregnant 6 months later. (Yes, I was on pills). Now I got my nexplanon removed last month, ovulated 3 weeks ago for the first time since then & still have not ha a period! I'm only 3 days late but keep getting BFN's. Is my cycle just seriously screwed now? Help!