Is it normal to have a very light period on the mirena IUD

Chloe

Little back story:

I’m on the Mirena IUD.

I had my first iud inserted January 2017 after 6 months it expelled from improper placement.

After it expelled in August of 2017 I went back to my GP and had another inserted. Since then my experiemce with the iud has been completely different. My periods spanned to be about 2 months apart and would get a bit lighter each time.

This week ive had all my period symptoms but I’m just having light Brownish/red spotting.

Is this normal? I’m just not used to it since with my last iud that expelled was almost making my periods worse.

Let me know of your experiences and if this is normal!