I didn’t get my period this month

Ok so I’ve been using the skyla iud for 7months and I’ve have a regular (small) period every month but this month I just straight up didn’t get it. I’m 9 days late. Is that normal? I feel like I’ve had my iud in long enough that my period wouldn’t randomly not come. Should I take a test. My bf and I don’t use condoms and he never pulls out. HELP.