extreme stressed 23 year old !

Hey Ladies ! I'm kinda in a pickle , I'm a 23 year old full time student that works graveyard at the airport , I'm stressed but  not extremely .... I haven't had my period since the first week of February and it's a few days late now . I have experience with late periods but this time is alittle different I've been spotting since my period was supposed to start . Now I've had an IUD for about two years now and I just got into a serious relationship . The last three months we've been really careless when it comes to condoms and that "pull out" meathod .... Ima litttle neverous to take a pregancy test, and just wanted to know if anyone could help ease my nerves before I do lol smh #whathaveIgottenmyselfinto