Hi, I have had the nexplanon(implanon) for 11 months this month, I have had my period every month(mostly irregular) but I haven't had a period at all for over a month(I'm due on my next period on the 14th April) i have had aching in my lower stomach, headaches and dizziness and fatigue. I took a home pregnancy test today which came back negative, is this normal? Thanks in advance.