Am i pregnant?

I had lost my virginity about 5 weeks ago, and I have had the Kyleena IUD for a year now . I have not spotted or have had a period in over 6 months. I did have a uti that ended a week ago. I started having light cramps and brown spotting 2 days ago. Does this mean I am pregnant? Or could this be a side effect of losing my virginity with an iud? please help i’m really scared.