Late period with IUD?

Kelsea

So my period is NEVER late. Always on the day this app says. I have the Paraguard IUD, I've had it for almost 2 years. I have 2 toddlers, oldest is almost 4 and the youngest almost 2. I'm honestly freaking out. It's only 3 days late but I don't have any of my normal period symptoms. Should I take a test? Should I wait a few more days? I'm honestly pretty scared lol