I have had my Implanon for a little over two years. I never really had periods at all except one or 2 times during the first year. However, as soon as the 2 year hit, I had pretty much regular periods for 2 months, and the 3rd I had 2 in the same month. It's been a month since my last period and I still haven't gotten it yet. I had protected sex 3 weeks ago and I know it's unlikely for me to be pregnant especially since I not only have the imllanon, but used a condom too. I'm just a worrier. Anybody can help?