After Mirena

Hello
​I got my Mirena out on 5/27. I was cramping before and I told my dr and she said that my body could be rejecting it and I'd probably get my period in a few days. Well I did on 5/30 we are TTC and so far I've had no cramping or any period symptoms and today marks day one of being late. Or can this be my body acting weird with having the Mirena for 5 years?