Periods

I hate being this person. But how long did it take for everyone’s periods to stop? I’ve been having very weird light periods and then very light spotting almost nothing later in the month. Until this month where I’m either 8-22 days late depending on if my last spotting was spotting or a period lol. It’s now been 9 months since I’ve had it placed and I’m trying to figure it out.

I know I sound like an idiot but was just curious everyone’s experience? Thanks!