I have had my implanon for nearly 2.5 years, it is due to come out January 2015.. For the first couple of months I had regular periods then they completely stopped. Today I noticed I had my period but it wasn't bad at all. Over the past few days I've felt extremely bloated and my boobs have been sore. I had un protected sex about 2 weeks ago and I'm not sure weather it is possible that I'm pregnant or just the implanon effects?