Nexplanon. I NEED FEEDBACK.

Brenna • I'm 18.& my period makes me cry. 😂🙄 no seriously, help.
So I got the Nexplanon like over a year ago. And ever since then my period has been totally off. And never went back to normal. I'll go months without one, and then Aunt Flo decides to take an extended vacay for like a month straight. Is this normal? I haven't talked to my doctor because she's 4.5 hours away and don't wanna waste my time if it's nothing. I need some feedback. Has this happened to you guys or is there something wrong with me?