I'm going to tell little bit of my story about birth control and experience.I was on nexplanon for 1 month my side of effects were nausea , breast pain , headache ,dizziness, changes in appetite, l also hear that it's common  to have irregular periods.So 1 month past i didn't' started my period i thought it was normal because of side effects .then started feeling sick for nexplanon .but my instincts were telling me that my side effects were not normal so I decided to take a pregnancy test and it came out positive.