Need opinions quick

Okay, so my periods have never really been regular but the last few months my cycle has been 33ish days and today I'm on day 41..8 days late....but I don't know if it's late or just coming later this month. 
This probably sounds like an obvious "yes, take a test" I just want someone to tell me to do it. 
Also, should I tell my fiancé and take it with him?