Suggest Remedy For Irregularity In Periods

I got implanon about 9 or 10 weeks after having my child. Didn t bleed at all until he was about 11 months, and my dr told me that since I cut back in breastfeeding the period started. Well after a while it went to a normal period each months. I breastfed him for 16 months. Two months ago when I stopped I have had almost a constant period. Should I be worried or is it just the hormones in my body changing with my milk drying up?