Should I Take a Test ??

Maria
So I got my period on October 21st - 26th but I had sex with my boyfriend on the 25th   Of October and I haven't gotten my period  . I'm 11 days late now and I've been extremely tired where I have no energy what's so ever and I'm extremely nauseous.  Many girlfriends of mine say I should take the test but I'm not convinced yet tbh 😐😐