periods every other month?

I always had really consistant periods until I got the nexplanon implant (long story short it messed up my hormones and made me bleed constantly so I had to remove it for doing more harm than good) now that the implant is gone my periods have come back but only every other month? also they are darker and more dried up. it's been over a year since I got rid of it and most say the adjustment period is only supposed to last a few months. should I be concerned for this? I used to have full, healthy, bright red 7-day long period without cramps or other symptoms, now they only last a couple of days. should I schedule an appointment? I am extremely low on money so I cant unless its an emergency or likely to become one. has anyone had a similar experience and gotten answers?