Extra Long Ass Period

Jacqueline • Here because I need guidance.
So I got the nexplanon implant and had occasional spotting for about three months. Now, all of a sudden, my period came at about average flow and has lasted for 10-12 days. It's still currently here. My periods typically last half that. The doctors told me my periods would get more regular after about 3-6 months. Do you guys think this is to be expected or should I see the doctor again? I really hate this lol