Cramps 2 Week Post-Insertion

So I got the Kyleena inserted Monday Feb 4th, period started the following Saturday. Exactly 7 days after(11th) I had unprotected sex and my boyfriend finished inside. The following weekend after that (Feb 15-18) had sex and he finished inside twice. Today, Feb 20, I’ve been having cramping as if my period was starting but my next period is in 16 days or so. Could this be normal cramping from the Kyleena? This is my first IUD so I’m not sure what to expect other than irregular periods..