Late period on copper IUD

Bradi • Mama to two precious boys (ages 2 and 4) 💙 and just found out we are expecting our third! 🥰

I’m not sure if this is the right group to put this in but.... since i had my paragard inserted I’ve had very regular heavyish periods that come around the 25-26th of each month very consistently. But i still have not started and it’s the 2nd. I’ve taken a few pregnancy tests and they are negative. Is this sudden irregularity normal on a copper IUD?