Arm implant

Ka

Hey how is everyone doing? So I'd like to know if any has been thru this i have been on the arm implant for about 3.5 yrs and I had never had spotting or my period and on Saturday I started with some spotting until yesterday I have none today but I'd like to know if this is normal or not and also about 3 weeks until of last week i had my nipples really sore like of I was breastfeeding anyway I thought I had to replace by November of this year and I was told my implant is good for 5 yrs so basically my next replacement is in 2022 and I thought the symptoms i had was due to the implant causing my symptoms but now I'm not sure. Please no bad comments. And thanks