periods with Skyla.

Has anybody else has very irregular periods with the Skyla?? I had my periods normally the first few years I had it then middle of my seconds year it got VERY irregular. I had it at the beginning of 2016 regular then it got really messed up I stopped having them in July, got stressed in august had one, then didn't have one until Nov & Dec ( thinking maybe due to stress) and them both came on the 24th and I didn't have one. Had some spotting a week or so after (beginning of JAN) took a pregnancy test, (Neg) and haven't got mine this month & ive been stressed. I have no idea what's going on! Help! TIA! 😊