I've been on the implant for 2 years and a few months ago I had my period for a straight month. Now I have it and it's coming and going. I'm talking about having it for a few hours then it's completely gone for about 8 hours (no spotting or anything) literally nothing then come backs and repeats. I went to the doctors and they didn't say much but took blood. I've also been getting these sharp pains in my pelvis and feeling nauseous right around 6pm.. could it be just symptoms of the implant or could I be pregnant?