Oo, normal talaga yan sa maraming moms na may implant, ang hormones from the implant really do affect your period, sometimes making it longer or mas heavy, or sometimes lighter pa. A week-long period is something na maraming nag-report, pero kung concern ka or if it's causing you discomfort, it's best to check with your OB para ma-rule out kung may other things going on at para sa peace of mind mo. Sana okay lang yan at mabilis kumilos ang body mo to adjust sa implant, mommy!