Just alil abnormal

Bobbie
So I am currently on the Mirena IUD, I have been for almost 2 years. I have been told I have PCOS, and usually have very heavy and painful periods, with cramping, fatigue mainly my associated symptoms. This month has been strange the week or so leading up to my period I was very mood and my apatite because atrocious! I also had more acne than usual and feel extremely bloated like gaining weight size bloating (if that makes any sense 😝). Adding to the weirdness is my period started very light, had a heavy day, went back to spotting, completely stopped one day and now is very light, that has never been my period. Tonight i just started wondering...could any of this weirdness be my body telling me something has changed? Like could i be pregnant? 
Thanks for listening!