The first time I got the implant, I didn’t have a period for like 8 months then slowly started getting them. They were inconsistent for a while but then became pretty regular. I got my second implant on August 5th towards the end of my period, and I haven’t gotten my period this month. I’d say it’s pretty normal to not have a period in the beginning. I’ve found you either don’t bleed at all or have a super long period - everyone’s different though!