Ttc after Mirena

Hey! I have had an hormonal intrauterine device (Mirena) for about 2years. I got it taken out 3 weaks ago, and has still not goten my period. I find it so hard to know my cycle, and when im ovulate. I have for now felt periode like cramps for around one week, but still no periode.

When can I take a pregnencytest and is it possible that I am pregnant? ☺️

Any experiences about pregnancy after hormonal spiral?☺️