just need some reassurance:/

I have the birth control nexplanon and I've been bleeding for a month now. It kind of sucks because my SO and I are very sexually active but lately I've been having to stop him and remind him that I can't even though I really want too. How long did yours last? And if you have a SO or person your seeing how did you deal with it? Kinda just feeling down abt this birth control method😔