periods on mirena but no pain

[Luna-24]

I’ve had 2 laps for endo, have tri cycled the pill and been on tablets such as naproxen.

Ive been so luckily that having the coil fitted during my 2nd lap has majorly improved pain and quality of life. I’ve had it for a year and bit and I’m on my 5th period. My dilemma is it’s pain free but how much endo is progressing with my period and will this cause issues in the future? Should it matter if the periods are pain free or should I think about fertility and if I ever have lap could develop pass stage2/3. I don’t really want to dose up on the pill too as that’s a lot of hormones with coil and like I said quality of life/pain is the best it’s been ever!