Nexplanon implant and cystitis

Nothing worked prior to the implant…3 conceived while using another form of controlled release birth control, and my last 2 were planned by getting the implant removed. My periods are somewhat irregular but also extremely lighter than before and shorter lasting, however I have noticed every other month that it’s rougher than before, cramps, headache etc. but then 19 days later it’s just normal. I’ve also been able to maintain the same weight while using the implant and regardless of changes in my lifestyle that would suggest a fluctuation in weight over the last 7 years

Gained a lot of weight at the beginning 110 -> 120 and now losing a lot -> 100 would have period every day for a month long, none for months, or 5 days of blood every 2 weeks i love and hate it

My only complaint would be that when I first got on it, I bled for 2 months straight, but I was put on estrogen and I have not had any excessive bleeding since then