First period

Tegan
I got the IUD in on the 15th of March. Everyday since I have had cramps. On the 26th of March I got my first period. I had a looked at my <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period calendar</a> and it's been 2 weeks since it started. 
Is all this normal? Help please?