Could I be pregnant?

So I am on an IUD, I've had said IUD for maybe a year now. I had one problem in the beginning with misalignment but the doctor fixed it and I'm fine. It's lighten my periods greatly, taking a week or week and a half down to 2-5 days of a light flow. I've never completely missed a period though.

Well me and this new guy hooked up and he did the deed inside me, to keep details sparing, and did so a total of three times. That was a little over a month ago, and since then I've only had something like the very beginning of a period but no flow? It's weird.

Beyond missing my period, I haven't shown any signs otherwise, my belly isn't growing, I have gotten morning sickness or anything.

I'm just wondering what's the likelyhood I'm pregnant? I'm a little to much on the careful side and utterly nervous to evaluate my chances rationally and was hoping this lovely community coukd help. Thank you! ♡