I am currently using Implanon contraceptive implant since April 08 and not had a period since. I do have regular sex with my fiancee and do not use any other form of protection. But lately (about a week) I have been peeing nearly every hour, I have low back ache, I am more tired and very little energy. I have more headaches and I have been having bad mood swings, one minute I am fine, next I am all emotional and then I am moody. I have had a few spots in my knickers aswell. My friends say my boobs have got bigger. After doing some research I have found these can be signs of early stages of being pregnant? Can this be possible or are they side effects of the implant? Because I have not had a period for a few months I am unsure. Can you please help? Thank you.