Late Period or Pregnant?

So I removed my Copper IUD, non hormonal BC, the 15th of January, a day after I finished ovulating (3% chance of being fertile) We did have intercourse right before the day of the removal (32% chance). Glow expected my period to happen on the 27th and I haven’t gotten it yet. Usually, I start either a day before or on the prediction date. Technically I’m 3 days late because i have yet been visited by AF. But I’m just curious if any of you ladies had experience with a late period after taking your IUD out. We are TTC but I would assume my chance of getting pregnant wouldn’t be until my next ovulation date, due to the low percentage of my fertility. Any idea what could be going on? Am I just overthinking lol

I am experiencing light cramps, dizziness, headaches, nausea to the point where I get pretty close to throwing up