Nexplanon implant and body hair getting darker

I’ve had the implant for 2 years and it’s great that I haven’t had a pregnancy scare. However, my periods are so irregular it’s a joke. I keep track of my periods on an app called Flo and my cycle seems really abnormal. One month I’d be spotting for a week then my period would be over, the next month I’d either miss the whole month or I’d be bleeding on and off for 12 days or more, stop and be on again a week or 2 later, it’s never the same week every month. I can’t keep up with how irregular it is so I’m thinking to change contraception.

Have been using the implant for years. Went to clinic to get replacement, would be my fourth, and practice didn't put implant in. Only discovered months later. Scary process all round, getting 10+ appointments to locate it! Only to be told it wasn't inserted in the first place.

Previously used Implanon for 6 years without any bleeding, switched to nexplanon and had regular periods initially and then they became heavy, painful, prolonged and unpredictable. Much preferred the previous version. Have had it taken out now and have changed to combi pill so will see how that goes.