If you have cramps at the site of the implant, you should report the matter to your health care provider, who can observe if the implant is dislocated. As your hormone contraception
has been almost completed, you could be experiencing hormone imbalances and hence the abnormal menstrual cycles. These hormone disturbances can also be the cause of the headaches
. Please get blood pressure measurement, blood counts and urinalysis
. Hope this helps.