Does iud make your first period late?

I got my kyleena iud placed on January 18th. A little after a week I had sex and my fiancé came in me. My period is supposed to start today but hasn’t. It’s not quite late yet, but I was wondering if your first period after getting your iud is a little late? Also after getting kyleena I was spotting for quite a while, would that impact my period as well? Also does the iud start working in protecting you from pregnancy after a week? Just wanting to know if I should test later on lmao