IUD/Pregnancy???

Hello all! So I have an IUD and I have for about 3 years now and I absolutely love it. My fiancé and I do not use condoms and he does not pull out every time (it’s something that feels good for him and we’ve never had issues in the past).

My period has regulated itself out in the last year or so and now it is 12 days late. I have been under a lot of stress lately with work, travel, school, payments, etc. So I have been blaming it on that, but I’m no longer feeling much stress and it still has no come.

Does anyone have any suggestions?