"my experience with nexplanon went well considering the fact that it kept me protected. i was numbed in the arm before they inserted it so it didn&#039;t hurt, and i was able to have sex a week or two afterwards with no worries. it will not help with irregular periods and may make your periods much longer than normal unfortunately. however, it&#039;s extremely effective and i didn&#039;t have any weight gain or harsh side effects other than a longer period. it won&#039;t clear up skin and won&#039;t promote breast growth."