Is spotting for 2 weeks after 4 months of nexplanon ?

Sr

Hey All

I got nexplanon in august and got my period after 2 weeks. It was heavy bleeding for 3 weeks and light spotting for next week. Doc said it’s normal. Again after 4 months .. I’m experiencing spotting continuously for over 2 weeks? Is this normal ? Should I take this thing off my body? Suggestions please !!