"i&#039;ve had nexplanon implant for two and a half years. it wasn&#039;t so much a bad experience, i&#039;ve had my period every couple months for at least 2 weeks. just recently my period has lasted me about a month. not necessarily heavy but really annoying. when i first got on nexlpanon i weighed about 125 - 130, and now i&#039;m around 110. i&#039;ve tried everything i could to gain weight from eating more to taking mass gainers. my body feels extremely weak and i&#039;m always tired. i feel as if it&#039;s been getting worse."